#3D4759
Closest named color: Dark Grey Blue (#29465B). oklch(39.6% 0.033 262.1), rgb(61, 71, 89).
Aa
White text reads best on this color (9.35:1).
About this color
#3D4759 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.033 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.35:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #3D4759 |
| RGB | rgb(61, 71, 89) |
| HSL | hsl(219, 19%, 29%) |
| OKLCH | oklch(39.6% 0.033 262.1) |
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 #3D4759 | 9.35:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #3D4759 | 2.24:1 | Fails | Lc 12.3 | Not readable |
| #3D4759 text on white | 9.35:1 | AAA | Lc 91.6 | Preferred for body text |
| #3D4759 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D1
oklch(80.9% 0.025 262.1)
-
Step 400
400
#93A1BA
oklch(70.6% 0.04 262.1)
-
Step 500
500
#798AA9
oklch(63.1% 0.051 262.4)
-
Step 600
600
#627494
oklch(55.7% 0.054 261.8)
-
Step 700
700
#51617E
oklch(49.1% 0.051 262.1)
-
Step 800
800
#424F67
oklch(42.6% 0.043 262.5)
-
Step 900
900 (this color)
#3D4759
oklch(39.6% 0.033 262.1)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#3D4759 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) | #41485A | 0.007 |
| Deuteranopia (no green cones) | #3E4559 | 0.006 |
| Tritanopia (no blue cones) | #354B4D | 0.030 |
| Achromatopsia (no color) | #474747 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4759
#3D4759
oklch(39.6% 0.033 262.1)
- #504532
#504532
oklch(39.6% 0.034 81.1)
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 #3D4759, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.040
- Onyx #343A40 ΔE 0.055
- Dark Teal #014D4E ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.061
- Deep Teal #00555A ΔE 0.062
Use #3D4759 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.