#21615A
Closest named color: Dark Green Blue (#1F6357). oklch(45% 0.065 185.1), rgb(33, 97, 90).
Aa
White text reads best on this color (7.18:1).
About this color
#21615A is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.065 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.009 away. White text reads best on it, at 7.18:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #21615A |
| RGB | rgb(33, 97, 90) |
| HSL | hsl(173, 49%, 25%) |
| OKLCH | oklch(45% 0.065 185.1) |
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 #21615A | 7.18:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #21615A | 2.92:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #21615A text on white | 7.18:1 | AAA | Lc 84.7 | Fine for body text |
| #21615A text on black | 2.92:1 | Fails | Lc -17.3 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A6C9C4
oklch(80.9% 0.038 185.9)
-
Step 400
400
#74ADA5
oklch(70.6% 0.061 184.9)
-
Step 500
500
#4C9990
oklch(63.1% 0.078 185.4)
-
Step 600
600
#29837A
oklch(55.5% 0.084 185.5)
-
Step 700
700
#196F67
oklch(49.1% 0.079 185.6)
-
Step 800
800 (this color)
#21615A
oklch(45% 0.065 185.1)
-
Step 900
900
#1C4A45
oklch(37.6% 0.051 185.6)
-
Step 950
950
#122C28
oklch(27.1% 0.033 182.6)
#21615A 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) | #5C5C5A | 0.069 |
| Deuteranopia (no green cones) | #52545B | 0.066 |
| Tritanopia (no blue cones) | #00635F | 0.014 |
| Achromatopsia (no color) | #575757 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21615A
#21615A
oklch(45% 0.065 185.1)
- #744550
#744550
oklch(44.9% 0.066 4.9)
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 #21615A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.009
- Dark Aqua #05696B ΔE 0.031
- Petrol #005F6A ΔE 0.031
- Deep Teal #00555A ΔE 0.045
- Pine #2B5D34 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.055
- Spruce #0A5F38 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.057
Use #21615A 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.