#34399D
Closest named color: Sapphire (#2138AB). oklch(40.6% 0.159 274.6), rgb(52, 57, 157).
Aa
White text reads best on this color (9.46:1).
About this color
#34399D is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.159 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.032 away. White text reads best on it, at 9.46:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #34399D |
| RGB | rgb(52, 57, 157) |
| HSL | hsl(237, 50%, 41%) |
| OKLCH | oklch(40.6% 0.159 274.6) |
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 #34399D | 9.46:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #34399D | 2.21:1 | Fails | Lc 12.6 | Not readable |
| #34399D text on white | 9.46:1 | AAA | Lc 91.4 | Preferred for body text |
| #34399D text on black | 2.21:1 | Fails | Lc -11.0 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FC
oklch(88.4% 0.052 274.5)
-
Step 300
300
#AEBCFD
oklch(80.8% 0.093 274.7)
-
Step 400
400
#8697FC
oklch(70.7% 0.148 274.7)
-
Step 500
500
#6A79FA
oklch(63% 0.191 274.6)
-
Step 600
600
#555EE9
oklch(55.6% 0.207 274.6)
-
Step 700
700
#464CCB
oklch(49.1% 0.193 274.7)
-
Step 800
800 (this color)
#34399D
oklch(40.6% 0.159 274.6)
-
Step 900
900
#303782
oklch(37.6% 0.125 274.7)
-
Step 950
950
#1C214C
oklch(27% 0.079 274.8)
#34399D 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) | #004BA0 | 0.053 |
| Deuteranopia (no green cones) | #00419B | 0.042 |
| Tritanopia (no blue cones) | #005265 | 0.131 |
| Achromatopsia (no color) | #464646 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34399D
#34399D
oklch(40.6% 0.159 274.6)
- #584800
#584800
oklch(40.6% 0.083 94.4)
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 #34399D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.032
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Indigo Blue #3A18B1 ΔE 0.061
- Imperial Purple #480CA8 ΔE 0.071
- Blue Blue #2242C7 ΔE 0.072
- Majorelle Blue #3F37C9 ΔE 0.072
Use #34399D 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.