#3B374F
Closest named color: Onyx (#343A40). oklch(35.1% 0.042 291.8), rgb(59, 55, 79).
Aa
White text reads best on this color (11.38:1).
About this color
#3B374F is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.042 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.034 away. White text reads best on it, at 11.38:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #3B374F |
| RGB | rgb(59, 55, 79) |
| HSL | hsl(250, 18%, 26%) |
| OKLCH | oklch(35.1% 0.042 291.8) |
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 #3B374F | 11.38:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #3B374F | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #3B374F text on white | 11.38:1 | AAA | Lc 96.2 | Preferred for body text |
| #3B374F text on black | 1.84:1 | Fails | Lc 0.0 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C0BDD4
oklch(80.8% 0.032 291.7)
-
Step 400
400
#A19CBE
oklch(70.8% 0.049 291.8)
-
Step 500
500
#8A83AD
oklch(63.1% 0.063 292.1)
-
Step 600
600
#746C99
oklch(55.6% 0.069 292.1)
-
Step 700
700
#615A83
oklch(49.1% 0.065 291.6)
-
Step 800
800
#4F4A6A
oklch(42.7% 0.053 291.2)
-
Step 900
900 (this color)
#3B374F
oklch(35.1% 0.042 291.8)
-
Step 950
950
#262432
oklch(26.9% 0.026 291.1)
#3B374F 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) | #313A50 | 0.018 |
| Deuteranopia (no green cones) | #313A4E | 0.018 |
| Tritanopia (no blue cones) | #373B3F | 0.036 |
| Achromatopsia (no color) | #3A3A3A | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B374F
#3B374F
oklch(35.1% 0.042 291.8)
- #3B3D23
#3B3D23
oklch(35.1% 0.042 112.1)
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 #3B374F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.042
- Gunmetal #293241 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.050
- Charcoal #264653 ΔE 0.052
Use #3B374F 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.