#215451
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.1% 0.055 190), rgb(33, 84, 81).
Aa
White text reads best on this color (8.56:1).
About this color
#215451 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.055 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.019 away. White text reads best on it, at 8.56:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.45:1 |
| White text | 8.56:1 |
Values
| HEX | #215451 |
| RGB | rgb(33, 84, 81) |
| HSL | hsl(176, 44%, 23%) |
| OKLCH | oklch(41.1% 0.055 190) |
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 #215451 | 8.56:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #215451 | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #215451 text on white | 8.56:1 | AAA | Lc 89.3 | Fine for body text |
| #215451 text on black | 2.45:1 | Fails | Lc -13.0 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#AAC8C5
oklch(81% 0.033 189.1)
-
Step 400
400
#7CABA7
oklch(70.7% 0.051 189.5)
-
Step 500
500
#589692
oklch(63% 0.065 190.3)
-
Step 600
600
#3B817C
oklch(55.7% 0.071 189.1)
-
Step 700
700
#2C6D69
oklch(49.2% 0.066 189.7)
-
Step 800
800 (this color)
#215451
oklch(41.1% 0.055 190)
-
Step 900
900
#244947
oklch(37.7% 0.043 190.9)
-
Step 950
950
#162B29
oklch(27.1% 0.027 187.9)
#215451 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) | #4F5051 | 0.057 |
| Deuteranopia (no green cones) | #474A52 | 0.054 |
| Tritanopia (no blue cones) | #005653 | 0.016 |
| Achromatopsia (no color) | #4C4C4C | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215451
#215451
oklch(41.1% 0.055 190)
- #643E44
#643E44
oklch(41% 0.054 9.4)
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 #215451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.019
- Deep Teal #00555A ΔE 0.020
- Dark Blue Green #005249 ΔE 0.025
- Dark Teal #014D4E ΔE 0.032
- Petrol #005F6A ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.048
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.054
Use #215451 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.