#33599F
Closest named color: Denim Blue (#3B5B92). oklch(47.3% 0.121 261.5), rgb(51, 89, 159).
Aa
White text reads best on this color (6.83:1).
About this color
#33599F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.121 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.024 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #33599F |
| RGB | rgb(51, 89, 159) |
| HSL | hsl(219, 51%, 41%) |
| OKLCH | oklch(47.3% 0.121 261.5) |
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 #33599F | 6.83:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #33599F | 3.07:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #33599F text on white | 6.83:1 | AA | Lc 83.4 | Fine for body text |
| #33599F text on black | 3.07:1 | AA large text | Lc -18.6 | 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 700.
-
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
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ACC2E7
oklch(81% 0.058 260.8)
-
Step 400
400
#80A1DC
oklch(70.7% 0.094 261.7)
-
Step 500
500
#6088D2
oklch(63% 0.121 261.9)
-
Step 600
600
#4671BF
oklch(55.6% 0.131 261.4)
-
Step 700
700 (this color)
#33599F
oklch(47.3% 0.121 261.5)
-
Step 800
800
#2F4D86
oklch(42.7% 0.101 262)
-
Step 900
900
#29416B
oklch(37.7% 0.078 260.9)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#33599F 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) | #3860A2 | 0.021 |
| Deuteranopia (no green cones) | #26569E | 0.016 |
| Tritanopia (no blue cones) | #006974 | 0.099 |
| Achromatopsia (no color) | #5B5B5B | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33599F
#33599F
oklch(47.3% 0.121 261.5)
- #775500
#775500
oklch(47.3% 0.098 81.7)
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 #33599F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.024
- Dusk Blue #26538D ΔE 0.036
- Dusky Blue #475F94 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.039
- Twilight #4E518B ΔE 0.046
- Denim #3B638C ΔE 0.048
- Peacock Blue #016795 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.052
Use #33599F 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.