#03738A
Closest named color: Sea Blue (#047495). oklch(51.3% 0.092 218.3), rgb(3, 115, 138).
Aa
White text reads best on this color (5.49:1).
About this color
#03738A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.092 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.018 away. White text reads best on it, at 5.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #03738A |
| RGB | rgb(3, 115, 138) |
| HSL | hsl(190, 96%, 28%) |
| OKLCH | oklch(51.3% 0.092 218.3) |
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 #03738A | 5.49:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #03738A | 3.82:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #03738A text on white | 5.49:1 | AA | Lc 76.9 | Fine for body text |
| #03738A text on black | 3.82:1 | AA large text | Lc -24.9 | Dividers and decoration only |
Tints and shades
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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6CACBE
oklch(70.8% 0.071 217.6)
-
Step 500
500
#3D97AE
oklch(63.2% 0.091 217.6)
-
Step 600
600
#08819A
oklch(55.7% 0.099 218)
-
Step 700
700 (this color)
#03738A
oklch(51.3% 0.092 218.3)
-
Step 800
800
#03586B
oklch(42.6% 0.076 219.3)
-
Step 900
900
#134957
oklch(37.8% 0.059 218.9)
-
Step 950
950
#0D2B33
oklch(27.1% 0.038 218.3)
#03738A 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) | #646F8B | 0.077 |
| Deuteranopia (no green cones) | #55648A | 0.070 |
| Tritanopia (no blue cones) | #007B7A | 0.041 |
| Achromatopsia (no color) | #696969 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03738A
#03738A
oklch(51.3% 0.092 218.3)
- #93533F
#93533F
oklch(51.3% 0.091 38.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #03738A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.018
- Ocean #017B92 ΔE 0.025
- Deep Aqua #08787F ΔE 0.027
- Ocean Blue #03719C ΔE 0.032
- Deep Turquoise #017374 ΔE 0.036
- Bluegreen #017A79 ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.041
- Peacock Blue #016795 ΔE 0.045
Use #03738A 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.