#21473E
Closest named color: Dark Teal (#014D4E). oklch(36.7% 0.047 176.2), rgb(33, 71, 62).
Aa
White text reads best on this color (10.31:1).
About this color
#21473E is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.047 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.030 away. White text reads best on it, at 10.31:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.03:1 |
| White text | 10.31:1 |
Values
| HEX | #21473E |
| RGB | rgb(33, 71, 62) |
| HSL | hsl(166, 37%, 20%) |
| OKLCH | oklch(36.7% 0.047 176.2) |
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 #21473E | 10.31:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #21473E | 2.03:1 | Fails | Lc 10.1 | Not readable |
| #21473E text on white | 10.31:1 | AAA | Lc 93.8 | Preferred for body text |
| #21473E text on black | 2.03:1 | Fails | Lc -8.7 | 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
#CDDED9
oklch(88.6% 0.019 176.4)
-
Step 300
300
#AAC8C0
oklch(80.8% 0.034 177.5)
-
Step 400
400
#7BAC9F
oklch(70.6% 0.056 176.4)
-
Step 500
500
#579888
oklch(63.1% 0.072 176.2)
-
Step 600
600
#398272
oklch(55.5% 0.077 176.8)
-
Step 700
700
#2B6E5F
oklch(49.1% 0.072 176)
-
Step 800
800
#255A4E
oklch(42.8% 0.06 176.2)
-
Step 900
900 (this color)
#21473E
oklch(36.7% 0.047 176.2)
-
Step 950
950
#162B26
oklch(27% 0.029 177.1)
#21473E 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) | #45433E | 0.050 |
| Deuteranopia (no green cones) | #3E3E3F | 0.047 |
| Tritanopia (no blue cones) | #114844 | 0.014 |
| Achromatopsia (no color) | #404040 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21473E
#21473E
oklch(36.7% 0.047 176.2)
- #533440
#533440
oklch(36.6% 0.048 354.9)
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 #21473E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.030
- Dark Blue Green #005249 ΔE 0.036
- Charcoal #264653 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.041
- Evergreen #05472A ΔE 0.042
- Onyx #343A40 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.054
Use #21473E 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.