#30407E
Closest named color: Twilight Blue (#0A437A). oklch(39.2% 0.106 270), rgb(48, 64, 126).
Aa
White text reads best on this color (9.72:1).
About this color
#30407E is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.106 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 9.72:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.16:1 |
| White text | 9.72:1 |
Values
| HEX | #30407E |
| RGB | rgb(48, 64, 126) |
| HSL | hsl(228, 45%, 34%) |
| OKLCH | oklch(39.2% 0.106 270) |
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 #30407E | 9.72:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #30407E | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #30407E text on white | 9.72:1 | AAA | Lc 92.3 | Preferred for body text |
| #30407E text on black | 2.16:1 | Fails | Lc -10.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CDD8F7
oklch(88.4% 0.044 270)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#829CF0
oklch(70.8% 0.127 269.9)
-
Step 500
500
#6480EB
oklch(63% 0.163 270.1)
-
Step 600
600
#4D67D9
oklch(55.6% 0.177 270.1)
-
Step 700
700
#3E55BD
oklch(49.2% 0.165 269.9)
-
Step 800
800
#334698
oklch(42.7% 0.136 269.9)
-
Step 900
900 (this color)
#30407E
oklch(39.2% 0.106 270)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#30407E 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) | #224880 | 0.025 |
| Deuteranopia (no green cones) | #15417D | 0.027 |
| Tritanopia (no blue cones) | #004E59 | 0.092 |
| Achromatopsia (no color) | #444444 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30407E
#30407E
oklch(39.2% 0.106 270)
- #564300
#564300
oklch(39.2% 0.08 90.3)
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 #30407E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Cobalt #1E488F ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.043
- Light Navy #155084 ΔE 0.048
- Blueberry #464196 ΔE 0.052
- Dusk Blue #26538D ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.061
- Marine Blue #01386A ΔE 0.062
Use #30407E 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.