#33439E
Closest named color: Blueberry (#464196). oklch(42.5% 0.148 271.1), rgb(51, 67, 158).
Aa
White text reads best on this color (8.61:1).
About this color
#33439E is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.148 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.029 away. White text reads best on it, at 8.61:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #33439E |
| RGB | rgb(51, 67, 158) |
| HSL | hsl(231, 51%, 41%) |
| OKLCH | oklch(42.5% 0.148 271.1) |
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 #33439E | 8.61:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #33439E | 2.43:1 | Fails | Lc 14.8 | Not readable |
| #33439E text on white | 8.61:1 | AAA | Lc 89.2 | Fine for body text |
| #33439E text on black | 2.43:1 | Fails | Lc -13.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEF9
oklch(80.9% 0.086 271.2)
-
Step 400
400
#819AF7
oklch(70.7% 0.139 271.1)
-
Step 500
500
#647EF3
oklch(63.2% 0.177 271.1)
-
Step 600
600
#4D64E2
oklch(55.7% 0.192 271)
-
Step 700
700
#3F52C4
oklch(49.2% 0.178 271.1)
-
Step 800
800 (this color)
#33439E
oklch(42.5% 0.148 271.1)
-
Step 900
900
#2C3A7E
oklch(37.7% 0.116 271.1)
-
Step 950
950
#1A234A
oklch(27.1% 0.073 271.1)
#33439E 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) | #0051A1 | 0.044 |
| Deuteranopia (no green cones) | #00479C | 0.037 |
| Tritanopia (no blue cones) | #00596A | 0.121 |
| Achromatopsia (no color) | #4C4C4C | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33439E
#33439E
oklch(42.5% 0.148 271.1)
- #604C00
#604C00
oklch(42.5% 0.087 91.4)
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 #33439E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.029
- Cobalt #1E488F ΔE 0.036
- Sapphire #2138AB ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.044
- Dusk Blue #26538D ΔE 0.055
- Light Navy #155084 ΔE 0.064
- Twilight #4E518B ΔE 0.067
- Blue Blue #2242C7 ΔE 0.067
Use #33439E 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.