#38407C
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.101 275.1), rgb(56, 64, 124).
Aa
White text reads best on this color (9.57:1).
About this color
#38407C is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.101 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 9.57:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #38407C |
| RGB | rgb(56, 64, 124) |
| HSL | hsl(233, 38%, 35%) |
| OKLCH | oklch(39.6% 0.101 275.1) |
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 #38407C | 9.57:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #38407C | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #38407C text on white | 9.57:1 | AAA | Lc 92.0 | Preferred for body text |
| #38407C text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D8F6
oklch(88.6% 0.042 275.1)
-
Step 300
300
#B2BDF2
oklch(80.8% 0.076 275.5)
-
Step 400
400
#8B9AEC
oklch(70.8% 0.121 275)
-
Step 500
500
#707EE5
oklch(63% 0.154 275.2)
-
Step 600
600
#5A65D3
oklch(55.6% 0.167 275.3)
-
Step 700
700
#4A53B7
oklch(49.1% 0.156 275.2)
-
Step 800
800
#3D4594
oklch(42.8% 0.128 275.2)
-
Step 900
900 (this color)
#38407C
oklch(39.6% 0.101 275.1)
-
Step 950
950
#1E2345
oklch(27.1% 0.063 275.1)
#38407C 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) | #25487E | 0.030 |
| Deuteranopia (no green cones) | #1E427B | 0.031 |
| Tritanopia (no blue cones) | #194D58 | 0.088 |
| Achromatopsia (no color) | #454545 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #38407C
#38407C
oklch(39.6% 0.101 275.1)
- #544600
#544600
oklch(39.7% 0.082 96)
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 #38407C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Cobalt #1E488F ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- Blueberry #464196 ΔE 0.049
- Light Navy #155084 ΔE 0.052
- Dusk Blue #26538D ΔE 0.057
- Twilight #4E518B ΔE 0.064
- Deep Sea Blue #015482 ΔE 0.065
Use #38407C 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.