#3B4B60
Closest named color: Dark Grey Blue (#29465B). oklch(40.8% 0.041 255.4), rgb(59, 75, 96).
Aa
White text reads best on this color (8.89:1).
About this color
#3B4B60 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.041 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 8.89:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #3B4B60 |
| RGB | rgb(59, 75, 96) |
| HSL | hsl(214, 24%, 30%) |
| OKLCH | oklch(40.8% 0.041 255.4) |
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 #3B4B60 | 8.89:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #3B4B60 | 2.36:1 | Fails | Lc 13.6 | Not readable |
| #3B4B60 text on white | 8.89:1 | AAA | Lc 90.4 | Preferred for body text |
| #3B4B60 text on black | 2.36:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B7C2D0
oklch(81% 0.023 254.4)
-
Step 400
400
#91A2B9
oklch(70.7% 0.039 256)
-
Step 500
500
#768BA7
oklch(63% 0.049 255.7)
-
Step 600
600
#5F7592
oklch(55.6% 0.052 255.5)
-
Step 700
700
#4E627D
oklch(49.1% 0.05 256)
-
Step 800
800 (this color)
#3B4B60
oklch(40.8% 0.041 255.4)
-
Step 900
900
#364353
oklch(37.8% 0.032 253.8)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#3B4B60 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) | #434C61 | 0.013 |
| Deuteranopia (no green cones) | #3F4860 | 0.010 |
| Tritanopia (no blue cones) | #2F5052 | 0.037 |
| Achromatopsia (no color) | #4A4A4A | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4B60
#3B4B60
oklch(40.8% 0.041 255.4)
- #574731
#574731
oklch(40.9% 0.04 75.1)
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 #3B4B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal #264653 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.054
- Deep Teal #00555A ΔE 0.056
- Dusty Grape #545775 ΔE 0.062
- Dark Teal #014D4E ΔE 0.062
Use #3B4B60 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.