#28443B
Closest named color: Charcoal Grey (#3C4142). oklch(36.1% 0.038 171.7), rgb(40, 68, 59).
Aa
White text reads best on this color (10.60:1).
About this color
#28443B is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.038 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.034 away. White text reads best on it, at 10.60:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.60:1 |
Values
| HEX | #28443B |
| RGB | rgb(40, 68, 59) |
| HSL | hsl(161, 26%, 21%) |
| OKLCH | oklch(36.1% 0.038 171.7) |
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 #28443B | 10.60:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #28443B | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #28443B text on white | 10.60:1 | AAA | Lc 94.5 | Preferred for body text |
| #28443B text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE9
oklch(93.7% 0.008 168.7)
-
Step 200
200
#CFDDD8
oklch(88.6% 0.016 172.6)
-
Step 300
300
#AFC7BE
oklch(80.9% 0.029 171)
-
Step 400
400
#85AA9D
oklch(70.7% 0.045 171.5)
-
Step 500
500
#659585
oklch(63.1% 0.057 171.6)
-
Step 600
600
#4B7F6F
oklch(55.5% 0.062 172.3)
-
Step 700
700
#3C6C5D
oklch(49.2% 0.058 171.7)
-
Step 800
800
#32584C
oklch(42.8% 0.048 171.7)
-
Step 900
900 (this color)
#28443B
oklch(36.1% 0.038 171.7)
-
Step 950
950
#1A2A25
oklch(26.9% 0.023 173)
#28443B 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) | #42413B | 0.038 |
| Deuteranopia (no green cones) | #3E3D3C | 0.038 |
| Tritanopia (no blue cones) | #204441 | 0.013 |
| Achromatopsia (no color) | #3F3F3F | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28443B
#28443B
oklch(36.1% 0.038 171.7)
- #4D3540
#4D3540
oklch(36% 0.038 350.1)
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 #28443B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.034
- Dark Teal #014D4E ΔE 0.039
- Charcoal #264653 ΔE 0.040
- Onyx #343A40 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.045
- Evergreen #05472A ΔE 0.045
- Dark Blue Green #005249 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.052
Use #28443B 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.