#215D66
Closest named color: Petrol (#005F6A). oklch(44.4% 0.062 208.9), rgb(33, 93, 102).
Aa
White text reads best on this color (7.44:1).
About this color
#215D66 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.062 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.014 away. White text reads best on it, at 7.44:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #215D66 |
| RGB | rgb(33, 93, 102) |
| HSL | hsl(188, 51%, 26%) |
| OKLCH | oklch(44.4% 0.062 208.9) |
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 #215D66 | 7.44:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #215D66 | 2.82:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #215D66 text on white | 7.44:1 | AAA | Lc 85.6 | Fine for body text |
| #215D66 text on black | 2.82:1 | Fails | Lc -16.4 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A6C8CD
oklch(81% 0.037 207.3)
-
Step 400
400
#75ABB4
oklch(70.7% 0.058 209)
-
Step 500
500
#4D96A2
oklch(63.1% 0.075 209.4)
-
Step 600
600
#2C808D
oklch(55.6% 0.081 209.6)
-
Step 700
700
#1D6C78
oklch(49.1% 0.075 209.8)
-
Step 800
800 (this color)
#215D66
oklch(44.4% 0.062 208.9)
-
Step 900
900
#1E494F
oklch(37.8% 0.048 207.6)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#215D66 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) | #555967 | 0.060 |
| Deuteranopia (no green cones) | #4B5266 | 0.055 |
| Tritanopia (no blue cones) | #006160 | 0.023 |
| Achromatopsia (no color) | #555555 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215D66
#215D66
oklch(44.4% 0.062 208.9)
- #724640
#724640
oklch(44.4% 0.062 28.2)
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 #215D66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.014
- Deep Teal #00555A ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.036
- Dark Aqua #05696B ΔE 0.037
- YInMn Blue #415A77 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Blue Green #005249 ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.063
Use #215D66 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.