#33518E
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.107 263), rgb(51, 81, 142).
Aa
White text reads best on this color (7.75:1).
About this color
#33518E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.107 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.014 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #33518E |
| RGB | rgb(51, 81, 142) |
| HSL | hsl(220, 47%, 38%) |
| OKLCH | oklch(44.3% 0.107 263) |
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 #33518E | 7.75:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #33518E | 2.70:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #33518E text on white | 7.75:1 | AAA | Lc 86.7 | Fine for body text |
| #33518E text on black | 2.70:1 | Fails | Lc -15.4 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ACC1EA
oklch(80.9% 0.063 263.7)
-
Step 400
400
#80A0DF
oklch(70.7% 0.1 263.4)
-
Step 500
500
#6087D6
oklch(63% 0.127 263.3)
-
Step 600
600
#4770C4
oklch(55.7% 0.138 263.1)
-
Step 700
700
#385DA9
oklch(49.1% 0.129 263)
-
Step 800
800 (this color)
#33518E
oklch(44.3% 0.107 263)
-
Step 900
900
#29406D
oklch(37.6% 0.083 262.6)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#33518E 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) | #355790 | 0.018 |
| Deuteranopia (no green cones) | #284F8D | 0.014 |
| Tritanopia (no blue cones) | #005F68 | 0.091 |
| Achromatopsia (no color) | #525252 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33518E
#33518E
oklch(44.3% 0.107 263)
- #6C4E00
#6C4E00
oklch(44.4% 0.091 83)
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 #33518E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.014
- Light Navy Blue #2E5A88 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- Light Navy #155084 ΔE 0.032
- Twilight #4E518B ΔE 0.036
- Cobalt #1E488F ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.040
- Dusk #4E5481 ΔE 0.043
Use #33518E 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.