#34407C
Closest named color: Twilight Blue (#0A437A). oklch(39.4% 0.102 272.4), rgb(52, 64, 124).
Aa
White text reads best on this color (9.67:1).
About this color
#34407C is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.102 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.039 away. White text reads best on it, at 9.67:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.17:1 |
| White text | 9.67:1 |
Values
| HEX | #34407C |
| RGB | rgb(52, 64, 124) |
| HSL | hsl(230, 41%, 35%) |
| OKLCH | oklch(39.4% 0.102 272.4) |
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 #34407C | 9.67:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #34407C | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #34407C text on white | 9.67:1 | AAA | Lc 92.2 | Preferred for body text |
| #34407C text on black | 2.17:1 | Fails | Lc -10.2 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AFBEF3
oklch(80.9% 0.077 272.3)
-
Step 400
400
#879BED
oklch(70.8% 0.122 272.5)
-
Step 500
500
#6A80E7
oklch(63.2% 0.156 272.2)
-
Step 600
600
#5466D5
oklch(55.5% 0.17 272.7)
-
Step 700
700
#4454B9
oklch(49% 0.159 272.4)
-
Step 800
800
#384695
oklch(42.7% 0.13 272.2)
-
Step 900
900 (this color)
#34407C
oklch(39.4% 0.102 272.4)
-
Step 950
950
#1C2346
oklch(27% 0.065 272.8)
#34407C 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) | #24487E | 0.027 |
| Deuteranopia (no green cones) | #1B417B | 0.028 |
| Tritanopia (no blue cones) | #0A4D58 | 0.090 |
| Achromatopsia (no color) | #444444 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34407C
#34407C
oklch(39.4% 0.102 272.4)
- #554400
#554400
oklch(39.3% 0.08 92.6)
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 #34407C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.039
- Cobalt #1E488F ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.041
- Light Navy #155084 ΔE 0.050
- Blueberry #464196 ΔE 0.052
- Dusk Blue #26538D ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.063
- Marine Blue #01386A ΔE 0.065
Use #34407C 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.