#21605F
Closest named color: Dark Green Blue (#1F6357). oklch(44.9% 0.063 193.7), rgb(33, 96, 95).
Aa
White text reads best on this color (7.23:1).
About this color
#21605F is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.063 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.019 away. White text reads best on it, at 7.23:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #21605F |
| RGB | rgb(33, 96, 95) |
| HSL | hsl(179, 49%, 25%) |
| OKLCH | oklch(44.9% 0.063 193.7) |
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 #21605F | 7.23:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #21605F | 2.90:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #21605F text on white | 7.23:1 | AAA | Lc 84.9 | Fine for body text |
| #21605F text on black | 2.90:1 | Fails | Lc -17.1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A6C9C7
oklch(81% 0.037 192.2)
-
Step 400
400
#74ADAB
oklch(70.8% 0.06 193.1)
-
Step 500
500
#4C9896
oklch(63.1% 0.075 193.1)
-
Step 600
600
#298281
oklch(55.5% 0.082 194)
-
Step 700
700
#1A6E6D
oklch(49.1% 0.076 193.8)
-
Step 800
800 (this color)
#21605F
oklch(44.9% 0.063 193.7)
-
Step 900
900
#1D4A49
oklch(37.8% 0.049 193.3)
-
Step 950
950
#122B2B
oklch(26.9% 0.031 195.5)
#21605F 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) | #5A5B5F | 0.066 |
| Deuteranopia (no green cones) | #505460 | 0.062 |
| Tritanopia (no blue cones) | #006360 | 0.015 |
| Achromatopsia (no color) | #575757 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21605F
#21605F
oklch(44.9% 0.063 193.7)
- #74464A
#74464A
oklch(44.9% 0.063 14.3)
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 #21605F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.019
- Petrol #005F6A ΔE 0.023
- Dark Aqua #05696B ΔE 0.029
- Deep Teal #00555A ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.053
- Dark Blue Green #005249 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.058
- Deep Turquoise #017374 ΔE 0.059
Use #21605F 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.