#33475B
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.042 249), rgb(51, 71, 91).
Aa
White text reads best on this color (9.57:1).
About this color
#33475B is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.042 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.013 away. White text reads best on it, at 9.57:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #33475B |
| RGB | rgb(51, 71, 91) |
| HSL | hsl(210, 28%, 28%) |
| OKLCH | oklch(39% 0.042 249) |
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 #33475B | 9.57:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #33475B | 2.19:1 | Fails | Lc 11.8 | Not readable |
| #33475B text on white | 9.57:1 | AAA | Lc 92.1 | Preferred for body text |
| #33475B text on black | 2.19:1 | Fails | Lc -10.3 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D0DAE5
oklch(88.4% 0.019 250.6)
-
Step 300
300
#B1C3D5
oklch(80.9% 0.032 248.2)
-
Step 400
400
#88A4C0
oklch(70.7% 0.052 248.6)
-
Step 500
500
#6B8DB0
oklch(63.1% 0.065 249.6)
-
Step 600
600
#52779B
oklch(55.6% 0.07 248.5)
-
Step 700
700
#426485
oklch(49.1% 0.066 248.6)
-
Step 800
800
#37516C
oklch(42.6% 0.055 250.1)
-
Step 900
900 (this color)
#33475B
oklch(39% 0.042 249)
-
Step 950
950
#1C2833
oklch(27.1% 0.026 246.6)
#33475B 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) | #3F475C | 0.017 |
| Deuteranopia (no green cones) | #3A435B | 0.015 |
| Tritanopia (no blue cones) | #244C4E | 0.037 |
| Achromatopsia (no color) | #454545 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33475B
#33475B
oklch(39% 0.042 249)
- #54412C
#54412C
oklch(39% 0.042 68.9)
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 #33475B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.013
- Charcoal #264653 ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Teal #014D4E ΔE 0.052
- Onyx #343A40 ΔE 0.053
- Deep Teal #00555A ΔE 0.055
Use #33475B 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.