#34376F
Closest named color: Twilight Blue (#0A437A). oklch(36.5% 0.095 278.3), rgb(52, 55, 111).
Aa
White text reads best on this color (10.92:1).
About this color
#34376F is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.095 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.050 away. White text reads best on it, at 10.92:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.92:1 |
| White text | 10.92:1 |
Values
| HEX | #34376F |
| RGB | rgb(52, 55, 111) |
| HSL | hsl(237, 36%, 32%) |
| OKLCH | oklch(36.5% 0.095 278.3) |
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 #34376F | 10.92:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #34376F | 1.92:1 | Fails | Lc 8.8 | Not readable |
| #34376F text on white | 10.92:1 | AAA | Lc 95.1 | Preferred for body text |
| #34376F text on black | 1.92:1 | Fails | Lc -7.5 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D3D7F4
oklch(88.5% 0.04 279.3)
-
Step 300
300
#B5BDEF
oklch(80.9% 0.071 277.6)
-
Step 400
400
#9099E7
oklch(70.7% 0.114 278)
-
Step 500
500
#777EDF
oklch(63.2% 0.144 278.3)
-
Step 600
600
#6165CD
oklch(55.7% 0.158 278.3)
-
Step 700
700
#5053B2
oklch(49.1% 0.148 278.1)
-
Step 800
800
#424490
oklch(42.7% 0.123 278.7)
-
Step 900
900 (this color)
#34376F
oklch(36.5% 0.095 278.3)
-
Step 950
950
#202343
oklch(27.1% 0.059 277.6)
#34376F 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) | #1E3F71 | 0.033 |
| Deuteranopia (no green cones) | #183A6E | 0.035 |
| Tritanopia (no blue cones) | #1C434D | 0.083 |
| Achromatopsia (no color) | #3D3D3D | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34376F
#34376F
oklch(36.5% 0.095 278.3)
- #493E00
#493E00
oklch(36.4% 0.075 97.9)
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 #34376F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.050
- Marine Blue #01386A ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.065
- Cobalt #1E488F ΔE 0.068
- Marine #042E60 ΔE 0.069
- Dark Blue Grey #1F3B4D ΔE 0.071
Use #34376F 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.