#21605C
Closest named color: Dark Green Blue (#1F6357). oklch(44.8% 0.064 189.3), rgb(33, 96, 92).
Aa
White text reads best on this color (7.26:1).
About this color
#21605C is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.064 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.015 away. White text reads best on it, at 7.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #21605C |
| RGB | rgb(33, 96, 92) |
| HSL | hsl(176, 49%, 25%) |
| OKLCH | oklch(44.8% 0.064 189.3) |
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 #21605C | 7.26:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #21605C | 2.89:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #21605C text on white | 7.26:1 | AAA | Lc 85.0 | Fine for body text |
| #21605C text on black | 2.89:1 | Fails | Lc -17.0 | 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
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A6C9C5
oklch(80.9% 0.038 187.9)
-
Step 400
400
#74ADA8
oklch(70.7% 0.06 189)
-
Step 500
500
#4C9893
oklch(63% 0.076 189.8)
-
Step 600
600
#2A837D
oklch(55.7% 0.083 188.6)
-
Step 700
700
#1A6F6A
oklch(49.2% 0.077 189)
-
Step 800
800 (this color)
#21605C
oklch(44.8% 0.064 189.3)
-
Step 900
900
#1D4A47
oklch(37.7% 0.05 189.4)
-
Step 950
950
#122B2A
oklch(26.9% 0.031 192.1)
#21605C 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) | #5B5B5C | 0.068 |
| Deuteranopia (no green cones) | #51545D | 0.063 |
| Tritanopia (no blue cones) | #00635F | 0.014 |
| Achromatopsia (no color) | #575757 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21605C
#21605C
oklch(44.8% 0.064 189.3)
- #73454D
#73454D
oklch(44.7% 0.064 8.7)
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 #21605C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.015
- Petrol #005F6A ΔE 0.027
- Dark Aqua #05696B ΔE 0.031
- Deep Teal #00555A ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Blue Green #005249 ΔE 0.055
- Dark Aquamarine #017371 ΔE 0.059
- Pine #2B5D34 ΔE 0.059
Use #21605C 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.