#28453F
Closest named color: Charcoal Grey (#3C4142). oklch(36.5% 0.037 179.5), rgb(40, 69, 63).
Aa
White text reads best on this color (10.43:1).
About this color
#28453F is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.037 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.031 away. White text reads best on it, at 10.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.01:1 |
| White text | 10.43:1 |
Values
| HEX | #28453F |
| RGB | rgb(40, 69, 63) |
| HSL | hsl(168, 27%, 21%) |
| OKLCH | oklch(36.5% 0.037 179.5) |
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 #28453F | 10.43:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #28453F | 2.01:1 | Fails | Lc 9.8 | Not readable |
| #28453F text on white | 10.43:1 | AAA | Lc 94.1 | Preferred for body text |
| #28453F text on black | 2.01:1 | Fails | Lc -8.4 | 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
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AFC7C1
oklch(81% 0.027 178.9)
-
Step 400
400
#83AAA1
oklch(70.7% 0.044 179.2)
-
Step 500
500
#63958A
oklch(63.1% 0.056 179)
-
Step 600
600
#497F74
oklch(55.5% 0.06 179.4)
-
Step 700
700
#396B62
oklch(49% 0.056 180.9)
-
Step 800
800
#305850
oklch(42.8% 0.048 179.6)
-
Step 900
900 (this color)
#28453F
oklch(36.5% 0.037 179.5)
-
Step 950
950
#1A2A27
oklch(27% 0.022 181.6)
#28453F 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) | #43423F | 0.039 |
| Deuteranopia (no green cones) | #3E3E3F | 0.037 |
| Tritanopia (no blue cones) | #1E4643 | 0.011 |
| Achromatopsia (no color) | #404040 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28453F
#28453F
oklch(36.5% 0.037 179.5)
- #4F373E
#4F373E
oklch(36.7% 0.036 359.9)
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 #28453F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.031
- Charcoal #264653 ΔE 0.034
- Dark Teal #014D4E ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.039
- Onyx #343A40 ΔE 0.040
- Dark Blue Green #005249 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.050
Use #28453F 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.