#334989
Closest named color: Cobalt (#1E488F). oklch(42.2% 0.11 267.3), rgb(51, 73, 137).
Aa
White text reads best on this color (8.55:1).
About this color
#334989 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.110 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.024 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #334989 |
| RGB | rgb(51, 73, 137) |
| HSL | hsl(225, 46%, 37%) |
| OKLCH | oklch(42.2% 0.11 267.3) |
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 #334989 | 8.55:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #334989 | 2.45:1 | Fails | Lc 14.8 | Not readable |
| #334989 text on white | 8.55:1 | AAA | Lc 89.2 | Fine for body text |
| #334989 text on black | 2.45:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400
#849EE1
oklch(70.6% 0.103 267.5)
-
Step 500
500
#6685D9
oklch(63.1% 0.132 267.3)
-
Step 600
600
#4E6DC6
oklch(55.6% 0.143 267.2)
-
Step 700
700
#3F5BAB
oklch(49.2% 0.132 267)
-
Step 800
800 (this color)
#334989
oklch(42.2% 0.11 267.3)
-
Step 900
900
#2D3F6F
oklch(37.8% 0.085 266.8)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#334989 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) | #2B508B | 0.020 |
| Deuteranopia (no green cones) | #1D4988 | 0.023 |
| Tritanopia (no blue cones) | #005762 | 0.094 |
| Achromatopsia (no color) | #4C4C4C | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334989
#334989
oklch(42.2% 0.11 267.3)
- #624A00
#624A00
oklch(42.3% 0.086 87.2)
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 #334989, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.024
- Dusk Blue #26538D ΔE 0.029
- Light Navy #155084 ΔE 0.033
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.046
- Twilight #4E518B ΔE 0.047
- Twilight Blue #0A437A ΔE 0.049
Use #334989 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.