#004F57
Closest named color: Dark Teal (#014D4E). oklch(39.1% 0.067 206.5), rgb(0, 79, 87).
Aa
White text reads best on this color (9.30:1).
About this color
#004F57 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.067 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.015 away. White text reads best on it, at 9.30:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #004F57 |
| RGB | rgb(0, 79, 87) |
| HSL | hsl(186, 100%, 17%) |
| OKLCH | oklch(39.1% 0.067 206.5) |
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 #004F57 | 9.30:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #004F57 | 2.25:1 | Fails | Lc 13.0 | Not readable |
| #004F57 text on white | 9.30:1 | AAA | Lc 91.0 | Preferred for body text |
| #004F57 text on black | 2.25:1 | Fails | Lc -11.3 | Not readable |
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 900.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C5DFE2
oklch(88.5% 0.028 205.1)
-
Step 300
300
#9BCAD1
oklch(80.8% 0.05 207.5)
-
Step 400
400
#5FAFBA
oklch(70.7% 0.08 207.1)
-
Step 500
500
#1C9BA8
oklch(63.2% 0.103 205.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900 (this color)
#004F57
oklch(39.1% 0.067 206.5)
-
Step 950
950
#052C31
oklch(27% 0.042 207.6)
#004F57 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) | #474B58 | 0.065 |
| Deuteranopia (no green cones) | #3C4457 | 0.058 |
| Tritanopia (no blue cones) | #005351 | 0.019 |
| Achromatopsia (no color) | #474747 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004F57
#004F57
oklch(39.1% 0.067 206.5)
- #643632
#643632
oklch(39% 0.067 25.8)
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 #004F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.015
- Deep Teal #00555A ΔE 0.020
- Dark Blue Green #005249 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.033
- Charcoal #264653 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.040
- Petrol #005F6A ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.063
Use #004F57 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.