#34384F
Closest named color: Onyx (#343A40). oklch(34.7% 0.041 276.5), rgb(52, 56, 79).
Aa
White text reads best on this color (11.50:1).
About this color
#34384F is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.041 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.030 away. White text reads best on it, at 11.50:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.82:1 |
| White text | 11.50:1 |
Values
| HEX | #34384F |
| RGB | rgb(52, 56, 79) |
| HSL | hsl(231, 21%, 26%) |
| OKLCH | oklch(34.7% 0.041 276.5) |
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 #34384F | 11.50:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #34384F | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #34384F text on white | 11.50:1 | AAA | Lc 96.5 | Preferred for body text |
| #34384F text on black | 1.82:1 | 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
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BBBFD5
oklch(80.8% 0.031 277.5)
-
Step 400
400
#989EBF
oklch(70.6% 0.049 277)
-
Step 500
500
#7F87AF
oklch(63.2% 0.061 275.7)
-
Step 600
600
#69709B
oklch(55.6% 0.067 276.8)
-
Step 700
700
#575E85
oklch(49.2% 0.063 276)
-
Step 800
800
#474D6C
oklch(42.8% 0.052 275.5)
-
Step 900
900 (this color)
#34384F
oklch(34.7% 0.041 276.5)
-
Step 950
950
#232533
oklch(26.9% 0.026 278.2)
#34384F 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 | 0.007 |
| Deuteranopia (no green cones) | #2F384E | 0.008 |
| Tritanopia (no blue cones) | #2D3C40 | 0.035 |
| Achromatopsia (no color) | #393939 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34384F
#34384F
oklch(34.7% 0.041 276.5)
- #403A21
#403A21
oklch(34.8% 0.04 96.3)
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 #34384F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.030
- Gunmetal #293241 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.045
- Charcoal #264653 ΔE 0.046
Use #34384F 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.