#215A57
Closest named color: Deep Teal (#00555A). oklch(42.9% 0.059 190.4), rgb(33, 90, 87).
Aa
White text reads best on this color (7.88:1).
About this color
#215A57 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.059 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.026 away. White text reads best on it, at 7.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #215A57 |
| RGB | rgb(33, 90, 87) |
| HSL | hsl(177, 46%, 24%) |
| OKLCH | oklch(42.9% 0.059 190.4) |
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 #215A57 | 7.88:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #215A57 | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #215A57 text on white | 7.88:1 | AAA | Lc 87.1 | Fine for body text |
| #215A57 text on black | 2.66:1 | Fails | Lc -15.0 | 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
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A8C8C6
oklch(80.9% 0.034 191.8)
-
Step 400
400
#78ACA8
oklch(70.7% 0.055 190)
-
Step 500
500
#529793
oklch(63% 0.07 190.6)
-
Step 600
600
#33827E
oklch(55.7% 0.077 190.6)
-
Step 700
700
#246E6A
oklch(49.2% 0.072 190)
-
Step 800
800 (this color)
#215A57
oklch(42.9% 0.059 190.4)
-
Step 900
900
#214947
oklch(37.6% 0.045 191.1)
-
Step 950
950
#142B2A
oklch(27% 0.029 191.9)
#215A57 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) | #555557 | 0.063 |
| Deuteranopia (no green cones) | #4C4F58 | 0.059 |
| Tritanopia (no blue cones) | #005C59 | 0.015 |
| Achromatopsia (no color) | #515151 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215A57
#215A57
oklch(42.9% 0.059 190.4)
- #6C4248
#6C4248
oklch(43% 0.059 10.5)
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 #215A57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.030
- Petrol #005F6A ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.034
- Dark Blue Green #005249 ΔE 0.039
- Dark Aqua #05696B ΔE 0.049
- Dark Teal #014D4E ΔE 0.049
- Pine #2B5D34 ΔE 0.058
Use #215A57 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.