#33538F
Closest named color: Dusk Blue (#26538D). oklch(44.9% 0.106 261.9), rgb(51, 83, 143).
Aa
White text reads best on this color (7.56:1).
About this color
#33538F is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.106 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.013 away. White text reads best on it, at 7.56:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #33538F |
| RGB | rgb(51, 83, 143) |
| HSL | hsl(219, 47%, 38%) |
| OKLCH | oklch(44.9% 0.106 261.9) |
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 #33538F | 7.56:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #33538F | 2.77:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #33538F text on white | 7.56:1 | AAA | Lc 86.1 | Fine for body text |
| #33538F text on black | 2.77:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1E9
oklch(80.8% 0.062 262.3)
-
Step 400
400
#7FA1DF
oklch(70.8% 0.099 262)
-
Step 500
500
#5E88D5
oklch(63.1% 0.126 261.7)
-
Step 600
600
#4570C3
oklch(55.6% 0.138 262.2)
-
Step 700
700
#365EA8
oklch(49.1% 0.127 261.5)
-
Step 800
800 (this color)
#33538F
oklch(44.9% 0.106 261.9)
-
Step 900
900
#28406D
oklch(37.6% 0.083 262)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#33538F 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) | #385991 | 0.019 |
| Deuteranopia (no green cones) | #2B508E | 0.013 |
| Tritanopia (no blue cones) | #00616A | 0.089 |
| Achromatopsia (no color) | #545454 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33538F
#33538F
oklch(44.9% 0.106 261.9)
- #6E4F00
#6E4F00
oklch(44.9% 0.092 82.4)
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 #33538F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.013
- Light Navy Blue #2E5A88 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.026
- Light Navy #155084 ΔE 0.034
- Twilight #4E518B ΔE 0.035
- Cobalt #1E488F ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.041
- Dusk #4E5481 ΔE 0.042
Use #33538F 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.