#21483F
Closest named color: Dark Teal (#014D4E). oklch(37% 0.047 176.6), rgb(33, 72, 63).
Aa
White text reads best on this color (10.17:1).
About this color
#21483F is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.047 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.028 away. White text reads best on it, at 10.17:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #21483F |
| RGB | rgb(33, 72, 63) |
| HSL | hsl(166, 37%, 21%) |
| OKLCH | oklch(37% 0.047 176.6) |
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 #21483F | 10.17:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #21483F | 2.06:1 | Fails | Lc 10.4 | Not readable |
| #21483F text on white | 10.17:1 | AAA | Lc 93.5 | Preferred for body text |
| #21483F text on black | 2.06:1 | Fails | Lc -9.0 | Not readable |
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 900.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED9
oklch(88.6% 0.02 177.4)
-
Step 300
300
#A9C9C0
oklch(81% 0.037 176.5)
-
Step 400
400
#7AADA0
oklch(70.8% 0.057 177)
-
Step 500
500
#569888
oklch(63.1% 0.072 176.4)
-
Step 600
600
#388272
oklch(55.5% 0.078 176.9)
-
Step 700
700
#296E60
oklch(49% 0.073 177.4)
-
Step 800
800
#245A4E
oklch(42.7% 0.061 176.4)
-
Step 900
900 (this color)
#21483F
oklch(37% 0.047 176.6)
-
Step 950
950
#152B26
oklch(26.9% 0.03 177.6)
#21483F 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) | #45443F | 0.049 |
| Deuteranopia (no green cones) | #3F3F40 | 0.048 |
| Tritanopia (no blue cones) | #104945 | 0.014 |
| Achromatopsia (no color) | #414141 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21483F
#21483F
oklch(37% 0.047 176.6)
- #543540
#543540
oklch(37% 0.047 356.8)
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 #21483F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.028
- Dark Blue Green #005249 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.037
- Charcoal #264653 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.042
- Evergreen #05472A ΔE 0.042
- Onyx #343A40 ΔE 0.051
- Deep Teal #00555A ΔE 0.051
Use #21483F 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.