#3D445E
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.045 272.5), rgb(61, 68, 94).
Aa
White text reads best on this color (9.60:1).
About this color
#3D445E is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.045 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.60:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #3D445E |
| RGB | rgb(61, 68, 94) |
| HSL | hsl(227, 21%, 30%) |
| OKLCH | oklch(39.2% 0.045 272.5) |
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 #3D445E | 9.60:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #3D445E | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #3D445E text on white | 9.60:1 | AAA | Lc 92.2 | Preferred for body text |
| #3D445E text on black | 2.18:1 | Fails | Lc -10.2 | 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
#D5D9E6
oklch(88.6% 0.018 272.3)
-
Step 300
300
#B9C0D7
oklch(81% 0.033 272.2)
-
Step 400
400
#959FC3
oklch(70.7% 0.054 272.8)
-
Step 500
500
#7B87B4
oklch(63.1% 0.069 272.7)
-
Step 600
600
#6470A0
oklch(55.5% 0.076 272.9)
-
Step 700
700
#535E89
oklch(49.1% 0.07 272.6)
-
Step 800
800
#444D6F
oklch(42.7% 0.058 272.4)
-
Step 900
900 (this color)
#3D445E
oklch(39.2% 0.045 272.5)
-
Step 950
950
#222635
oklch(27.2% 0.029 272.8)
#3D445E 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) | #3C465F | 0.006 |
| Deuteranopia (no green cones) | #39445D | 0.006 |
| Tritanopia (no blue cones) | #34494D | 0.040 |
| Achromatopsia (no color) | #454545 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D445E
#3D445E
oklch(39.2% 0.045 272.5)
- #4E4528
#4E4528
oklch(39.2% 0.046 92.8)
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 #3D445E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.053
- Onyx #343A40 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.059
- Twilight Blue #0A437A ΔE 0.069
- Prussian Blue #1D3557 ΔE 0.069
Use #3D445E 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.