#155256
Closest named color: Deep Teal (#00555A). oklch(40.3% 0.06 201.5), rgb(21, 82, 86).
Aa
White text reads best on this color (8.84:1).
About this color
#155256 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.060 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.011 away. White text reads best on it, at 8.84:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #155256 |
| RGB | rgb(21, 82, 86) |
| HSL | hsl(184, 61%, 21%) |
| OKLCH | oklch(40.3% 0.06 201.5) |
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 #155256 | 8.84:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #155256 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #155256 text on white | 8.84:1 | AAA | Lc 90.0 | Fine for body text |
| #155256 text on black | 2.37:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A7C8CA
oklch(80.9% 0.035 201)
-
Step 400
400
#76ACAF
oklch(70.8% 0.057 200.3)
-
Step 500
500
#4F979C
oklch(63.2% 0.072 201.4)
-
Step 600
600
#2F8186
oklch(55.6% 0.078 200.9)
-
Step 700
700
#206D72
oklch(49.1% 0.073 201.4)
-
Step 800
800 (this color)
#155256
oklch(40.3% 0.06 201.5)
-
Step 900
900
#1F494C
oklch(37.7% 0.047 201.6)
-
Step 950
950
#132B2C
oklch(27% 0.03 199.1)
#155256 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) | #4B4E56 | 0.060 |
| Deuteranopia (no green cones) | #424756 | 0.057 |
| Tritanopia (no blue cones) | #005553 | 0.015 |
| Achromatopsia (no color) | #4A4A4A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155256
#155256
oklch(40.3% 0.06 201.5)
- #653B3A
#653B3A
oklch(40.3% 0.06 21.5)
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 #155256, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.011
- Dark Slate Gray #2F4F4F ΔE 0.023
- Dark Teal #014D4E ΔE 0.023
- Dark Blue Green #005249 ΔE 0.026
- Charcoal #264653 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.045
- Petrol #005F6A ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.058
Use #155256 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.