#3A4263
Closest named color: Dark Grey Blue (#29465B). oklch(38.7% 0.057 273), rgb(58, 66, 99).
Aa
White text reads best on this color (9.81:1).
About this color
#3A4263 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.057 and its hue 273°. 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 9.81:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #3A4263 |
| RGB | rgb(58, 66, 99) |
| HSL | hsl(228, 26%, 31%) |
| OKLCH | oklch(38.7% 0.057 273) |
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 #3A4263 | 9.81:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #3A4263 | 2.13:1 | Fails | Lc 11.2 | Not readable |
| #3A4263 text on white | 9.81:1 | AAA | Lc 92.7 | Preferred for body text |
| #3A4263 text on black | 2.13:1 | Fails | Lc -9.7 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B7BFDD
oklch(80.8% 0.043 273.6)
-
Step 400
400
#929ECC
oklch(70.6% 0.069 273.2)
-
Step 500
500
#7886BF
oklch(63.2% 0.088 273.1)
-
Step 600
600
#616FAB
oklch(55.6% 0.095 273)
-
Step 700
700
#505D93
oklch(49.2% 0.088 272.5)
-
Step 800
800
#424C77
oklch(42.8% 0.073 273)
-
Step 900
900 (this color)
#3A4263
oklch(38.7% 0.057 273)
-
Step 950
950
#202538
oklch(26.9% 0.036 272.4)
#3A4263 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) | #374564 | 0.009 |
| Deuteranopia (no green cones) | #344262 | 0.009 |
| Tritanopia (no blue cones) | #2D494E | 0.052 |
| Achromatopsia (no color) | #444444 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4263
#3A4263
oklch(38.7% 0.057 273)
- #4F431D
#4F431D
oklch(38.6% 0.057 92)
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 #3A4263, 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 0.044
- Charcoal Grey #3C4142 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
- Twilight Blue #0A437A ΔE 0.059
- Onyx #343A40 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.063
- Dark Slate Gray #2F4F4F ΔE 0.063
Use #3A4263 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.