#255163
Closest named color: Deep Teal (#00555A). oklch(41.2% 0.057 227.4), rgb(37, 81, 99).
Aa
White text reads best on this color (8.62:1).
About this color
#255163 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.057 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.031 away. White text reads best on it, at 8.62:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #255163 |
| RGB | rgb(37, 81, 99) |
| HSL | hsl(197, 46%, 27%) |
| OKLCH | oklch(41.2% 0.057 227.4) |
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 #255163 | 8.62:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #255163 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #255163 text on white | 8.62:1 | AAA | Lc 89.4 | Fine for body text |
| #255163 text on black | 2.43:1 | Fails | Lc -12.8 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ABC5D2
oklch(80.8% 0.034 229.4)
-
Step 400
400
#7EA8BB
oklch(70.8% 0.053 227.5)
-
Step 500
500
#5B92AA
oklch(63.1% 0.068 227.6)
-
Step 600
600
#3F7C95
oklch(55.6% 0.074 227.1)
-
Step 700
700
#31687F
oklch(49% 0.069 228)
-
Step 800
800 (this color)
#255163
oklch(41.2% 0.057 227.4)
-
Step 900
900
#264654
oklch(37.6% 0.045 228.1)
-
Step 950
950
#172931
oklch(26.9% 0.028 227.9)
#255163 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) | #474F64 | 0.042 |
| Deuteranopia (no green cones) | #3F4963 | 0.037 |
| Tritanopia (no blue cones) | #005657 | 0.036 |
| Achromatopsia (no color) | #4C4C4C | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255163
#255163
oklch(41.2% 0.057 227.4)
- #64412F
#64412F
oklch(41.1% 0.057 47.9)
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 #255163, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal #264653 ΔE 0.039
- Petrol #005F6A ΔE 0.044
- Dark Teal #014D4E ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.052
- Dark Blue Green #005249 ΔE 0.054
Use #255163 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.