#30427C
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.1 268.5), rgb(48, 66, 124).
Aa
White text reads best on this color (9.56:1).
About this color
#30427C is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.100 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.033 away. White text reads best on it, at 9.56:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #30427C |
| RGB | rgb(48, 66, 124) |
| HSL | hsl(226, 44%, 34%) |
| OKLCH | oklch(39.5% 0.1 268.5) |
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 #30427C | 9.56:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #30427C | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #30427C text on white | 9.56:1 | AAA | Lc 91.9 | Preferred for body text |
| #30427C text on black | 2.19:1 | Fails | Lc -10.5 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ACBFF2
oklch(80.8% 0.075 268.8)
-
Step 400
400
#819DEC
oklch(70.7% 0.12 268.4)
-
Step 500
500
#6382E6
oklch(63.1% 0.154 268.7)
-
Step 600
600
#4B69D4
oklch(55.5% 0.168 268.6)
-
Step 700
700
#3D57B8
oklch(49.1% 0.156 268.7)
-
Step 800
800
#324895
oklch(42.8% 0.129 268.5)
-
Step 900
900 (this color)
#30427C
oklch(39.5% 0.1 268.5)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#30427C 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) | #27497E | 0.021 |
| Deuteranopia (no green cones) | #1C427B | 0.022 |
| Tritanopia (no blue cones) | #004F59 | 0.088 |
| Achromatopsia (no color) | #454545 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30427C
#30427C
oklch(39.5% 0.1 268.5)
- #584300
#584300
oklch(39.4% 0.081 88.3)
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 #30427C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.033
- Cobalt #1E488F ΔE 0.036
- Light Navy #155084 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.046
- Dusk Blue #26538D ΔE 0.052
- Blueberry #464196 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.062
Use #30427C 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.