#28475C
Closest named color: Dark Grey Blue (#29465B). oklch(38.3% 0.052 239.6), rgb(40, 71, 92).
Aa
White text reads best on this color (9.78:1).
About this color
#28475C is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.052 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.003 away. White text reads best on it, at 9.78:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #28475C |
| RGB | rgb(40, 71, 92) |
| HSL | hsl(204, 39%, 26%) |
| OKLCH | oklch(38.3% 0.052 239.6) |
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 #28475C | 9.78:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #28475C | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #28475C text on white | 9.78:1 | AAA | Lc 92.6 | Preferred for body text |
| #28475C text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D7
oklch(81% 0.038 238.2)
-
Step 400
400
#7DA6C4
oklch(70.6% 0.063 240.5)
-
Step 500
500
#5B90B5
oklch(63.1% 0.08 240.2)
-
Step 600
600
#3F7AA0
oklch(55.6% 0.085 239.1)
-
Step 700
700
#316689
oklch(49% 0.08 240.1)
-
Step 800
800
#29546F
oklch(42.7% 0.066 238.5)
-
Step 900
900 (this color)
#28475C
oklch(38.3% 0.052 239.6)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#28475C 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) | #3E475D | 0.029 |
| Deuteranopia (no green cones) | #37415C | 0.025 |
| Tritanopia (no blue cones) | #094C4E | 0.041 |
| Achromatopsia (no color) | #444444 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28475C
#28475C
oklch(38.3% 0.052 239.6)
- #583D26
#583D26
oklch(38.5% 0.052 60.8)
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 #28475C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.003
- Charcoal #264653 ΔE 0.016
- Dark Slate Gray #2F4F4F ΔE 0.041
- Dark Teal #014D4E ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.047
- Deep Teal #00555A ΔE 0.050
- Onyx #343A40 ΔE 0.054
Use #28475C 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.