#3B4253
Closest named color: Dark Grey Blue (#29465B). oklch(38% 0.031 267.4), rgb(59, 66, 83).
Aa
White text reads best on this color (10.04:1).
About this color
#3B4253 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.031 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 10.04:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.04:1 |
Values
| HEX | #3B4253 |
| RGB | rgb(59, 66, 83) |
| HSL | hsl(222, 17%, 28%) |
| OKLCH | oklch(38% 0.031 267.4) |
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 #3B4253 | 10.04:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #3B4253 | 2.09:1 | Fails | Lc 10.6 | Not readable |
| #3B4253 text on white | 10.04:1 | AAA | Lc 93.3 | Preferred for body text |
| #3B4253 text on black | 2.09:1 | Fails | Lc -9.2 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0D0
oklch(80.8% 0.023 269.4)
-
Step 400
400
#96A0B8
oklch(70.6% 0.037 267.5)
-
Step 500
500
#7D89A7
oklch(63.1% 0.047 267.9)
-
Step 600
600
#667392
oklch(55.7% 0.051 267)
-
Step 700
700
#55607C
oklch(49.1% 0.047 268)
-
Step 800
800
#454F65
oklch(42.8% 0.039 265.7)
-
Step 900
900 (this color)
#3B4253
oklch(38% 0.031 267.4)
-
Step 950
950
#222630
oklch(26.9% 0.02 267.9)
#3B4253 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) | #3D4354 | 0.005 |
| Deuteranopia (no green cones) | #3B4153 | 0.003 |
| Tritanopia (no blue cones) | #354548 | 0.026 |
| Achromatopsia (no color) | #424242 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4253
#3B4253
oklch(38% 0.031 267.4)
- #494130
#494130
oklch(37.8% 0.029 85.7)
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 #3B4253, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.029
- Charcoal #264653 ΔE 0.029
- Onyx #343A40 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.048
- Dark Teal #014D4E ΔE 0.062
- Gunmetal #293241 ΔE 0.064
Use #3B4253 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.