#215A64
Closest named color: Petrol (#005F6A). oklch(43.5% 0.061 211), rgb(33, 90, 100).
Aa
White text reads best on this color (7.74:1).
About this color
#215A64 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.061 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.019 away. White text reads best on it, at 7.74:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #215A64 |
| RGB | rgb(33, 90, 100) |
| HSL | hsl(189, 50%, 26%) |
| OKLCH | oklch(43.5% 0.061 211) |
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 #215A64 | 7.74:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #215A64 | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #215A64 text on white | 7.74:1 | AAA | Lc 86.7 | Fine for body text |
| #215A64 text on black | 2.71:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CE
oklch(80.8% 0.036 212.4)
-
Step 400
400
#77ABB5
oklch(70.8% 0.057 210.9)
-
Step 500
500
#5095A2
oklch(63% 0.072 211.2)
-
Step 600
600
#30808D
oklch(55.7% 0.079 210)
-
Step 700
700
#226C78
oklch(49.2% 0.073 210.4)
-
Step 800
800 (this color)
#215A64
oklch(43.5% 0.061 211)
-
Step 900
900
#204850
oklch(37.6% 0.047 212.4)
-
Step 950
950
#142A2F
oklch(26.9% 0.029 214)
#215A64 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) | #525765 | 0.057 |
| Deuteranopia (no green cones) | #484F64 | 0.053 |
| Tritanopia (no blue cones) | #005E5D | 0.025 |
| Achromatopsia (no color) | #535353 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215A64
#215A64
oklch(43.5% 0.061 211)
- #6F443C
#6F443C
oklch(43.5% 0.062 31.2)
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 #215A64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.019
- Deep Teal #00555A ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.042
- Dark Aqua #05696B ΔE 0.046
- YInMn Blue #415A77 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.053
- Dark Teal #014D4E ΔE 0.056
Use #215A64 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.