#334B9F
Closest named color: Blueberry (#464196). oklch(44.2% 0.139 268.2), rgb(51, 75, 159).
Aa
White text reads best on this color (7.93:1).
About this color
#334B9F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.139 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.035 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #334B9F |
| RGB | rgb(51, 75, 159) |
| HSL | hsl(227, 51%, 41%) |
| OKLCH | oklch(44.2% 0.139 268.2) |
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 #334B9F | 7.93:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #334B9F | 2.64:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #334B9F text on white | 7.93:1 | AAA | Lc 87.2 | Fine for body text |
| #334B9F text on black | 2.64:1 | Fails | Lc -14.9 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#AABFF6
oklch(80.8% 0.082 268.3)
-
Step 400
400
#7E9CF2
oklch(70.6% 0.131 268.4)
-
Step 500
500
#5F81ED
oklch(63.1% 0.166 268.2)
-
Step 600
600
#4768DC
oklch(55.7% 0.181 268.1)
-
Step 700
700
#3955BE
oklch(49% 0.168 268.3)
-
Step 800
800 (this color)
#334B9F
oklch(44.2% 0.139 268.2)
-
Step 900
900
#293C7B
oklch(37.7% 0.11 268.2)
-
Step 950
950
#182448
oklch(27.1% 0.069 267.8)
#334B9F 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) | #1656A2 | 0.034 |
| Deuteranopia (no green cones) | #004C9D | 0.034 |
| Tritanopia (no blue cones) | #005F6D | 0.116 |
| Achromatopsia (no color) | #515151 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334B9F
#334B9F
oklch(44.2% 0.139 268.2)
- #684F00
#684F00
oklch(44.2% 0.09 87.5)
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 #334B9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.035
- Cobalt #1E488F ΔE 0.036
- Dusk Blue #26538D ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.052
- Twilight #4E518B ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.054
- Light Navy #155084 ΔE 0.056
- Sapphire #2138AB ΔE 0.057
Use #334B9F 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.