#34394A
Closest named color: Onyx (#343A40). oklch(34.7% 0.031 272), rgb(52, 57, 74).
Aa
White text reads best on this color (11.47:1).
About this color
#34394A is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.019 away. White text reads best on it, at 11.47:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.83:1 |
| White text | 11.47:1 |
Values
| HEX | #34394A |
| RGB | rgb(52, 57, 74) |
| HSL | hsl(226, 17%, 25%) |
| OKLCH | oklch(34.7% 0.031 272) |
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 #34394A | 11.47:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #34394A | 1.83:1 | Fails | Lc 7.4 | Not readable |
| #34394A text on white | 11.47:1 | AAA | Lc 96.4 | Preferred for body text |
| #34394A text on black | 1.83:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BBC0D0
oklch(80.9% 0.023 272)
-
Step 400
400
#98A0B8
oklch(70.7% 0.036 270.9)
-
Step 500
500
#7F88A7
oklch(63.1% 0.048 272.3)
-
Step 600
600
#697292
oklch(55.7% 0.051 272.4)
-
Step 700
700
#575F7C
oklch(49% 0.048 272.6)
-
Step 800
800
#474E65
oklch(42.7% 0.039 271.5)
-
Step 900
900 (this color)
#34394A
oklch(34.7% 0.031 272)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#34394A 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) | #343A4B | 0.003 |
| Deuteranopia (no green cones) | #32394A | 0.003 |
| Tritanopia (no blue cones) | #2E3C3F | 0.027 |
| Achromatopsia (no color) | #393939 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34394A
#34394A
oklch(34.7% 0.031 272)
- #3F3927
#3F3927
oklch(34.5% 0.03 91.8)
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 #34394A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.028
- Gunmetal #293241 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.037
- Charcoal #264653 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.044
Use #34394A 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.