#334FA0
Closest named color: Dusk Blue (#26538D). oklch(45.2% 0.135 266.6), rgb(51, 79, 160).
Aa
White text reads best on this color (7.59:1).
About this color
#334FA0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.135 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.037 away. White text reads best on it, at 7.59:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #334FA0 |
| RGB | rgb(51, 79, 160) |
| HSL | hsl(225, 52%, 41%) |
| OKLCH | oklch(45.2% 0.135 266.6) |
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 #334FA0 | 7.59:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #334FA0 | 2.76:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #334FA0 text on white | 7.59:1 | AAA | Lc 86.1 | Fine for body text |
| #334FA0 text on black | 2.76:1 | Fails | Lc -16.0 | Dividers and decoration only |
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
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#A9C0F5
oklch(80.9% 0.079 266.4)
-
Step 400
400
#7C9DF0
oklch(70.6% 0.128 266.7)
-
Step 500
500
#5C83EB
oklch(63.2% 0.162 266.4)
-
Step 600
600
#4469D9
oklch(55.5% 0.177 266.8)
-
Step 700
700
#3657BC
oklch(49.1% 0.164 266.6)
-
Step 800
800 (this color)
#334FA0
oklch(45.2% 0.135 266.6)
-
Step 900
900
#283D79
oklch(37.7% 0.105 266.8)
-
Step 950
950
#172447
oklch(26.9% 0.068 266.6)
#334FA0 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) | #2159A3 | 0.029 |
| Deuteranopia (no green cones) | #004F9E | 0.033 |
| Tritanopia (no blue cones) | #006270 | 0.111 |
| Achromatopsia (no color) | #545454 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334FA0
#334FA0
oklch(45.2% 0.135 266.6)
- #6C5100
#6C5100
oklch(45.1% 0.092 86.3)
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 #334FA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.037
- Cobalt #1E488F ΔE 0.041
- Blueberry #464196 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.046
- Twilight #4E518B ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.055
- Light Navy #155084 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
Use #334FA0 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.