#00515C
Closest named color: Deep Teal (#00555A). oklch(39.9% 0.069 210.4), rgb(0, 81, 92).
Aa
White text reads best on this color (9.00:1).
About this color
#00515C is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.069 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.015 away. White text reads best on it, at 9.00:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.33:1 |
| White text | 9.00:1 |
Values
| HEX | #00515C |
| RGB | rgb(0, 81, 92) |
| HSL | hsl(187, 100%, 18%) |
| OKLCH | oklch(39.9% 0.069 210.4) |
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 #00515C | 9.00:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #00515C | 2.33:1 | Fails | Lc 13.8 | Not readable |
| #00515C text on white | 9.00:1 | AAA | Lc 90.2 | Preferred for body text |
| #00515C text on black | 2.33:1 | Fails | Lc -12.1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE4
oklch(88.5% 0.029 210)
-
Step 300
300
#9ACAD3
oklch(80.8% 0.052 210.3)
-
Step 400
400
#5CAFBD
oklch(70.7% 0.083 209.7)
-
Step 500
500
#159AAD
oklch(63% 0.106 210.6)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005A66
oklch(42.9% 0.074 210.4)
-
Step 900
900 (this color)
#00515C
oklch(39.9% 0.069 210.4)
-
Step 950
950
#042C32
oklch(27% 0.044 209.8)
#00515C 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) | #484E5D | 0.065 |
| Deuteranopia (no green cones) | #3D465C | 0.058 |
| Tritanopia (no blue cones) | #005654 | 0.025 |
| Achromatopsia (no color) | #494949 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00515C
#00515C
oklch(39.9% 0.069 210.4)
- #673830
#673830
oklch(39.7% 0.069 30.6)
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 #00515C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.015
- Dark Teal #014D4E ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.034
- Dark Blue Green #005249 ΔE 0.034
- Charcoal #264653 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.041
- Petrol #005F6A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.064
Use #00515C 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.