Sea Blue #047495
Sea Blue is a medium-dark, moderately saturated teal or cyan with hex code #047495 and RGB rgb(4, 116, 149).
Aa
White text reads best on this color (5.33:1).
About this color
#047495 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.099 and its hue 227°. Its hue sits on the cool side of the wheel. It is the named color Sea Blue. White text reads best on it, at 5.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Sea Blue |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Colors that go with Sea Blue
Matches found by rotating Sea Blue around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Sea Blue
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Sea Blue, closest first.
Similar named colors
The eight named colors closest to Sea Blue, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.016
- Ocean #017B92 ΔE 0.023
- Muted Blue #3B719F ΔE 0.036
- Peacock Blue #016795 ΔE 0.040
- Deep Aqua #08787F ΔE 0.041
- Nice Blue #107AB0 ΔE 0.044
- Dull Blue #49759C ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.045
More about Sea Blue
How to make Sea Blue
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 3 parts blue
- 1 part green
- 1 part white
Recipe result: #216B98, a difference of ΔE 0.028 from Sea Blue. That is very close: most people will not see the difference.
Codes for Sea Blue in every format
| HEX | #047495 |
| RGB | rgb(4, 116, 149) |
| HSL | hsl(194, 95%, 30%) |
| OKLCH | oklch(52.1% 0.099 226.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #047495 | 5.33:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #047495 | 3.93:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #047495 text on white | 5.33:1 | AA | Lc 76.0 | Fine for body text |
| #047495 text on black | 3.93:1 | AA large text | Lc -25.7 | Dividers and decoration only |
Shades and tints of Sea Blue
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C8D9
oklch(81% 0.048 226.3)
-
Step 400
400
#6AABC6
oklch(70.8% 0.077 226.4)
-
Step 500
500
#3B95B7
oklch(63% 0.098 226.6)
-
Step 600
600
#017FA3
oklch(55.6% 0.107 226.5)
-
Step 700
700 (this color)
#047495
oklch(52.1% 0.099 226.5)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#11485C
oklch(37.7% 0.064 227.2)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
Sea Blue with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #627297 | 0.073 |
| Deuteranopia (no green cones) | #516695 | 0.063 |
| Tritanopia (no blue cones) | #007D7F | 0.051 |
| Achromatopsia (no color) | #6B6B6B | 0.099 |
Use Sea Blue in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.