#20405B
Closest named color: Dark Grey Blue (#29465B). oklch(36% 0.06 246), rgb(32, 64, 91).
Aa
White text reads best on this color (10.79:1).
About this color
#20405B is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.060 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 10.79:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.94:1 |
| White text | 10.79:1 |
Values
| HEX | #20405B |
| RGB | rgb(32, 64, 91) |
| HSL | hsl(207, 48%, 24%) |
| OKLCH | oklch(36% 0.06 246) |
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 #20405B | 10.79:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #20405B | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #20405B text on white | 10.79:1 | AAA | Lc 94.9 | Preferred for body text |
| #20405B text on black | 1.94:1 | Fails | Lc -7.8 | 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
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#A9C4DD
oklch(80.8% 0.046 246.3)
-
Step 400
400
#7BA6CC
oklch(70.8% 0.073 245.7)
-
Step 500
500
#588FBE
oklch(63.1% 0.092 245.7)
-
Step 600
600
#3C78AB
oklch(55.6% 0.101 246.6)
-
Step 700
700
#2D6592
oklch(49.1% 0.093 245.6)
-
Step 800
800
#275377
oklch(42.8% 0.077 245.7)
-
Step 900
900 (this color)
#20405B
oklch(36% 0.06 246)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#20405B 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) | #34415C | 0.026 |
| Deuteranopia (no green cones) | #2C3B5A | 0.020 |
| Tritanopia (no blue cones) | #004649 | 0.048 |
| Achromatopsia (no color) | #3D3D3D | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20405B
#20405B
oklch(36% 0.06 246)
- #533617
#533617
oklch(36% 0.061 65.4)
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 #20405B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.027
- Charcoal #264653 ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.036
- Midnight Green #073B4C ΔE 0.038
- Marine Blue #01386A ΔE 0.047
- Onyx #343A40 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.053
Use #20405B 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.