#334F8D
Closest named color: Dusk Blue (#26538D). oklch(43.8% 0.108 264.2), rgb(51, 79, 141).
Aa
White text reads best on this color (7.94:1).
About this color
#334F8D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.108 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.016 away. White text reads best on it, at 7.94:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.64:1 |
| White text | 7.94:1 |
Values
| HEX | #334F8D |
| RGB | rgb(51, 79, 141) |
| HSL | hsl(221, 47%, 38%) |
| OKLCH | oklch(43.8% 0.108 264.2) |
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 #334F8D | 7.94:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #334F8D | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #334F8D text on white | 7.94:1 | AAA | Lc 87.3 | Fine for body text |
| #334F8D text on black | 2.64:1 | Fails | Lc -14.8 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ACC1EA
oklch(80.9% 0.063 263.7)
-
Step 400
400
#81A0E0
oklch(70.8% 0.1 264.1)
-
Step 500
500
#6187D7
oklch(63.1% 0.128 263.9)
-
Step 600
600
#486FC5
oklch(55.6% 0.141 264)
-
Step 700
700
#3A5CAA
oklch(49% 0.131 264.4)
-
Step 800
800 (this color)
#334F8D
oklch(43.8% 0.108 264.2)
-
Step 900
900
#2A406E
oklch(37.8% 0.084 263.6)
-
Step 950
950
#192640
oklch(27.1% 0.052 263.2)
#334F8D 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) | #33558F | 0.017 |
| Deuteranopia (no green cones) | #254D8C | 0.017 |
| Tritanopia (no blue cones) | #005D67 | 0.091 |
| Achromatopsia (no color) | #515151 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334F8D
#334F8D
oklch(43.8% 0.108 264.2)
- #694D00
#694D00
oklch(43.8% 0.09 84.4)
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 #334F8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.016
- Light Navy #155084 ΔE 0.031
- Cobalt #1E488F ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.041
- Dusk #4E5481 ΔE 0.046
Use #334F8D 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.