#21675C
Closest named color: Dark Green Blue (#1F6357). oklch(46.7% 0.071 180.7), rgb(33, 103, 92).
Aa
White text reads best on this color (6.64:1).
About this color
#21675C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.071 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.014 away. White text reads best on it, at 6.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #21675C |
| RGB | rgb(33, 103, 92) |
| HSL | hsl(171, 51%, 27%) |
| OKLCH | oklch(46.7% 0.071 180.7) |
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 #21675C | 6.64:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #21675C | 3.15:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #21675C text on white | 6.64:1 | AA | Lc 82.6 | Fine for body text |
| #21675C text on black | 3.15:1 | AA large text | Lc -19.3 | 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 700.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDDDA
oklch(88.4% 0.019 184.2)
-
Step 300
300
#A9C8C2
oklch(80.8% 0.034 182.4)
-
Step 400
400
#7AACA2
oklch(70.6% 0.055 180.8)
-
Step 500
500
#56988C
oklch(63.2% 0.07 180.9)
-
Step 600
600
#388275
oklch(55.6% 0.077 180.1)
-
Step 700
700 (this color)
#21675C
oklch(46.7% 0.071 180.7)
-
Step 800
800
#245A51
oklch(42.8% 0.059 180.8)
-
Step 900
900
#234A43
oklch(37.8% 0.046 180.6)
-
Step 950
950
#152B27
oklch(26.9% 0.029 181)
#21675C 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) | #62615C | 0.075 |
| Deuteranopia (no green cones) | #58595D | 0.072 |
| Tritanopia (no blue cones) | #006964 | 0.015 |
| Achromatopsia (no color) | #5C5C5C | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21675C
#21675C
oklch(46.7% 0.071 180.7)
- #7B4958
#7B4958
oklch(46.8% 0.071 0.8)
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 #21675C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.014
- Dark Aqua #05696B ΔE 0.024
- Dark Aquamarine #017371 ΔE 0.041
- Petrol #005F6A ΔE 0.043
- Deep Turquoise #017374 ΔE 0.044
- Pine #2B5D34 ΔE 0.058
- Spruce #0A5F38 ΔE 0.059
- Bluegreen #017A79 ΔE 0.063
Use #21675C 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.