#3A435F
Closest named color: Dark Grey Blue (#29465B). oklch(38.7% 0.049 270.3), rgb(58, 67, 95).
Aa
White text reads best on this color (9.77:1).
About this color
#3A435F is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.049 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 9.77:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.14:1 |
| White text | 9.77:1 |
Values
| HEX | #3A435F |
| RGB | rgb(58, 67, 95) |
| HSL | hsl(225, 24%, 30%) |
| OKLCH | oklch(38.7% 0.049 270.3) |
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 #3A435F | 9.77:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #3A435F | 2.14:1 | Fails | Lc 11.3 | Not readable |
| #3A435F text on white | 9.77:1 | AAA | Lc 92.6 | Preferred for body text |
| #3A435F text on black | 2.14:1 | Fails | Lc -9.8 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E7
oklch(88.6% 0.02 270.2)
-
Step 300
300
#B7C0D9
oklch(80.9% 0.037 269.8)
-
Step 400
400
#929FC6
oklch(70.6% 0.059 270.4)
-
Step 500
500
#7887B8
oklch(63% 0.076 271)
-
Step 600
600
#6171A4
oklch(55.7% 0.082 270.3)
-
Step 700
700
#505E8C
oklch(49% 0.076 270.5)
-
Step 800
800
#424D72
oklch(42.7% 0.063 270.9)
-
Step 900
900 (this color)
#3A435F
oklch(38.7% 0.049 270.3)
-
Step 950
950
#202636
oklch(27% 0.031 268.4)
#3A435F 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) | #3A4560 | 0.006 |
| Deuteranopia (no green cones) | #37425E | 0.006 |
| Tritanopia (no blue cones) | #2F494D | 0.045 |
| Achromatopsia (no color) | #444444 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A435F
#3A435F
oklch(38.7% 0.049 270.3)
- #4E4324
#4E4324
oklch(38.6% 0.049 90.5)
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 #3A435F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal #264653 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.056
- Onyx #343A40 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.064
Use #3A435F 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.