#20427C
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.106 260.4), rgb(32, 66, 124).
Aa
White text reads best on this color (9.85:1).
About this color
#20427C is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.106 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.016 away. White text reads best on it, at 9.85:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #20427C |
| RGB | rgb(32, 66, 124) |
| HSL | hsl(218, 59%, 31%) |
| OKLCH | oklch(38.7% 0.106 260.4) |
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 #20427C | 9.85:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #20427C | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #20427C text on white | 9.85:1 | AAA | Lc 92.5 | Preferred for body text |
| #20427C text on black | 2.13:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A3C2F5
oklch(80.9% 0.08 260.3)
-
Step 400
400
#71A0F0
oklch(70.6% 0.128 260.6)
-
Step 500
500
#4C86EA
oklch(63% 0.163 260.5)
-
Step 600
600
#2E6ED9
oklch(55.7% 0.177 260.2)
-
Step 700
700
#215BBC
oklch(49.1% 0.165 260.2)
-
Step 800
800
#1D4B98
oklch(42.7% 0.136 260.2)
-
Step 900
900 (this color)
#20427C
oklch(38.7% 0.106 260.4)
-
Step 950
950
#122547
oklch(26.9% 0.068 261.1)
#20427C 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) | #25487E | 0.019 |
| Deuteranopia (no green cones) | #123F7B | 0.016 |
| Tritanopia (no blue cones) | #005059 | 0.085 |
| Achromatopsia (no color) | #434343 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20427C
#20427C
oklch(38.7% 0.106 260.4)
- #5A3E00
#5A3E00
oklch(38.6% 0.08 79.8)
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 #20427C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.016
- Cobalt #1E488F ΔE 0.034
- Light Navy #155084 ΔE 0.041
- Marine Blue #01386A ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.052
- Dusk Blue #26538D ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.061
Use #20427C 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.