#21574C
Closest named color: Dark Blue Green (#005249). oklch(41.7% 0.06 177.6), rgb(33, 87, 76).
Aa
White text reads best on this color (8.29:1).
About this color
#21574C is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.060 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.026 away. White text reads best on it, at 8.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #21574C |
| RGB | rgb(33, 87, 76) |
| HSL | hsl(168, 45%, 24%) |
| OKLCH | oklch(41.7% 0.06 177.6) |
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 #21574C | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #21574C | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #21574C text on white | 8.29:1 | AAA | Lc 88.4 | Fine for body text |
| #21574C text on black | 2.53:1 | Fails | Lc -13.7 | 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 800.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDED9
oklch(88.6% 0.02 177.4)
-
Step 300
300
#AAC8C0
oklch(80.8% 0.034 177.5)
-
Step 400
400
#7AADA0
oklch(70.8% 0.057 177)
-
Step 500
500
#569889
oklch(63.1% 0.072 177.5)
-
Step 600
600
#388273
oklch(55.5% 0.078 178)
-
Step 700
700
#296E60
oklch(49% 0.073 177.4)
-
Step 800
800 (this color)
#21574C
oklch(41.7% 0.06 177.6)
-
Step 900
900
#234A41
oklch(37.7% 0.047 176.7)
-
Step 950
950
#152B26
oklch(26.9% 0.03 177.6)
#21574C 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) | #54524C | 0.064 |
| Deuteranopia (no green cones) | #4B4C4D | 0.059 |
| Tritanopia (no blue cones) | #005854 | 0.018 |
| Achromatopsia (no color) | #4E4E4E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21574C
#21574C
oklch(41.7% 0.06 177.6)
- #673E4C
#673E4C
oklch(41.7% 0.06 358.1)
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 #21574C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.026
- Deep Teal #00555A ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.030
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Teal #014D4E ΔE 0.042
- Pine #2B5D34 ΔE 0.048
- Petrol #005F6A ΔE 0.048
- Spruce #0A5F38 ΔE 0.050
Use #21574C 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.