#3A475F
Closest named color: Dark Grey Blue (#29465B). oklch(39.7% 0.044 262.4), rgb(58, 71, 95).
Aa
White text reads best on this color (9.34:1).
About this color
#3A475F is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.044 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #3A475F |
| RGB | rgb(58, 71, 95) |
| HSL | hsl(219, 24%, 30%) |
| OKLCH | oklch(39.7% 0.044 262.4) |
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 #3A475F | 9.34:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #3A475F | 2.24:1 | Fails | Lc 12.4 | Not readable |
| #3A475F text on white | 9.34:1 | AAA | Lc 91.6 | Preferred for body text |
| #3A475F text on black | 2.24:1 | Fails | Lc -10.8 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B5C1D7
oklch(80.9% 0.034 262.7)
-
Step 400
400
#8FA1C2
oklch(70.6% 0.053 262.5)
-
Step 500
500
#738AB3
oklch(63.1% 0.068 261.8)
-
Step 600
600
#5C739F
oklch(55.5% 0.074 262.9)
-
Step 700
700
#4C6188
oklch(49.2% 0.068 262.4)
-
Step 800
800
#3E4F6E
oklch(42.7% 0.056 262.1)
-
Step 900
900 (this color)
#3A475F
oklch(39.7% 0.044 262.4)
-
Step 950
950
#1F2734
oklch(27.1% 0.027 260)
#3A475F 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) | #3F4960 | 0.010 |
| Deuteranopia (no green cones) | #3B455E | 0.006 |
| Tritanopia (no blue cones) | #2E4C4F | 0.040 |
| Achromatopsia (no color) | #474747 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A475F
#3A475F
oklch(39.7% 0.044 262.4)
- #53452B
#53452B
oklch(39.8% 0.044 82.3)
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 #3A475F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Charcoal #264653 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.048
- Onyx #343A40 ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.061
- Deep Teal #00555A ΔE 0.063
- Dark Teal #014D4E ΔE 0.064
Use #3A475F 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.