#33457A
Closest named color: Twilight Blue (#0A437A). oklch(40.3% 0.092 268), rgb(51, 69, 122).
Aa
White text reads best on this color (9.23:1).
About this color
#33457A is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.092 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 9.23:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #33457A |
| RGB | rgb(51, 69, 122) |
| HSL | hsl(225, 41%, 34%) |
| OKLCH | oklch(40.3% 0.092 268) |
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 #33457A | 9.23:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #33457A | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #33457A text on white | 9.23:1 | AAA | Lc 91.2 | Preferred for body text |
| #33457A text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B2C0E4
oklch(80.9% 0.053 268.5)
-
Step 400
400
#899FD7
oklch(70.7% 0.086 267.6)
-
Step 500
500
#6D86CC
oklch(63.1% 0.11 268.2)
-
Step 600
600
#556FB9
oklch(55.6% 0.119 267.8)
-
Step 700
700
#465CA0
oklch(49.1% 0.112 268.5)
-
Step 800
800 (this color)
#33457A
oklch(40.3% 0.092 268)
-
Step 900
900
#313F68
oklch(37.6% 0.073 268.5)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#33457A 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) | #2E4B7C | 0.018 |
| Deuteranopia (no green cones) | #264479 | 0.016 |
| Tritanopia (no blue cones) | #075159 | 0.084 |
| Achromatopsia (no color) | #474747 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33457A
#33457A
oklch(40.3% 0.092 268)
- #5B4500
#5B4500
oklch(40.3% 0.082 87.8)
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 #33457A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Cobalt #1E488F ΔE 0.039
- Dusk Blue #26538D ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.050
- Blueberry #464196 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.057
Use #33457A 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.