#33338A
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.141 277.2), rgb(51, 51, 138).
Aa
White text reads best on this color (10.59:1).
About this color
#33338A is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.141 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 10.59:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #33338A |
| RGB | rgb(51, 51, 138) |
| HSL | hsl(240, 46%, 37%) |
| OKLCH | oklch(37.7% 0.141 277.2) |
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 #33338A | 10.59:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #33338A | 1.98:1 | Fails | Lc 9.8 | Not readable |
| #33338A text on white | 10.59:1 | AAA | Lc 94.2 | Preferred for body text |
| #33338A text on black | 1.98:1 | Fails | Lc -8.4 | 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 900.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E8FF
oklch(93.5% 0.031 277.9)
-
Step 200
200
#CFD6FF
oklch(88.4% 0.057 277.5)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7075FF
oklch(63.1% 0.201 277.4)
-
Step 600
600
#5B54F8
oklch(55.6% 0.235 277.4)
-
Step 700
700
#4B43D8
oklch(49.1% 0.218 277.1)
-
Step 800
800
#3D38AE
oklch(42.6% 0.181 277.3)
-
Step 900
900 (this color)
#33338A
oklch(37.7% 0.141 277.2)
-
Step 950
950
#1D1F51
oklch(27% 0.09 276.8)
#33338A 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) | #00428D | 0.052 |
| Deuteranopia (no green cones) | #003B88 | 0.046 |
| Tritanopia (no blue cones) | #004959 | 0.120 |
| Achromatopsia (no color) | #3F3F3F | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33338A
#33338A
oklch(37.7% 0.141 277.2)
- #4D4100
#4D4100
oklch(37.6% 0.078 97.3)
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 #33338A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.052
- Cobalt #1E488F ΔE 0.056
- Sapphire #2138AB ΔE 0.059
- Twilight Blue #0A437A ΔE 0.062
- Indigo Blue #3A18B1 ΔE 0.074
- Marine Blue #01386A ΔE 0.075
- Imperial Purple #480CA8 ΔE 0.077
Use #33338A 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.