#30406C
Closest named color: Twilight Blue (#0A437A). oklch(38% 0.078 267.5), rgb(48, 64, 108).
Aa
White text reads best on this color (10.11:1).
About this color
#30406C is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.078 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 10.11:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #30406C |
| RGB | rgb(48, 64, 108) |
| HSL | hsl(224, 38%, 31%) |
| OKLCH | oklch(38% 0.078 267.5) |
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 #30406C | 10.11:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #30406C | 2.07:1 | Fails | Lc 10.6 | Not readable |
| #30406C text on white | 10.11:1 | AAA | Lc 93.4 | Preferred for body text |
| #30406C text on black | 2.07:1 | Fails | Lc -9.1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#879FDC
oklch(70.8% 0.094 267.5)
-
Step 500
500
#6986D2
oklch(63.1% 0.12 267.1)
-
Step 600
600
#526EBF
oklch(55.6% 0.13 267.7)
-
Step 700
700
#425CA5
oklch(49.1% 0.121 267.1)
-
Step 800
800
#374B86
oklch(42.7% 0.101 267.9)
-
Step 900
900 (this color)
#30406C
oklch(38% 0.078 267.5)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#30406C 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) | #2E446E | 0.012 |
| Deuteranopia (no green cones) | #283F6B | 0.011 |
| Tritanopia (no blue cones) | #134950 | 0.070 |
| Achromatopsia (no color) | #424242 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30406C
#30406C
oklch(38% 0.078 267.5)
- #543F00
#543F00
oklch(38% 0.078 87.2)
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 #30406C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Marine Blue #01386A ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.055
- Light Navy #155084 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.060
- Cobalt #1E488F ΔE 0.061
Use #30406C 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.