#00758B
Closest named color: Sea Blue (#047495). oklch(51.9% 0.093 216.9), rgb(0, 117, 139).
Aa
White text reads best on this color (5.36:1).
About this color
#00758B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.093 and its hue 217°. 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 5.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #00758B |
| RGB | rgb(0, 117, 139) |
| HSL | hsl(189, 100%, 27%) |
| OKLCH | oklch(51.9% 0.093 216.9) |
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 #00758B | 5.36:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #00758B | 3.91:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #00758B text on white | 5.36:1 | AA | Lc 76.1 | Fine for body text |
| #00758B text on black | 3.91:1 | AA large text | Lc -25.6 | 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
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE4
oklch(88.6% 0.025 215.9)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6AACBE
oklch(70.7% 0.072 217.1)
-
Step 500
500
#3B97AD
oklch(63.1% 0.091 216.5)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700 (this color)
#00758B
oklch(51.9% 0.093 216.9)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#114956
oklch(37.6% 0.06 217)
-
Step 950
950
#0D2B32
oklch(27% 0.037 215.6)
#00758B 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) | #67718C | 0.081 |
| Deuteranopia (no green cones) | #57668B | 0.071 |
| Tritanopia (no blue cones) | #007D7C | 0.040 |
| Achromatopsia (no color) | #6B6B6B | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00758B
#00758B
oklch(51.9% 0.093 216.9)
- #965441
#965441
oklch(51.9% 0.093 36.9)
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 #00758B, 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 0.019
- Deep Aqua #08787F ΔE 0.024
- Ocean Blue #03719C ΔE 0.033
- Deep Turquoise #017374 ΔE 0.037
- Bluegreen #017A79 ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.041
- Teal #008080 ΔE 0.043
Use #00758B 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.