#38437A
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.093 273), rgb(56, 67, 122).
Aa
White text reads best on this color (9.32:1).
About this color
#38437A is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.093 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 9.32:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #38437A |
| RGB | rgb(56, 67, 122) |
| HSL | hsl(230, 37%, 35%) |
| OKLCH | oklch(40.2% 0.093 273) |
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 #38437A | 9.32:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #38437A | 2.25:1 | Fails | Lc 12.6 | Not readable |
| #38437A text on white | 9.32:1 | AAA | Lc 91.4 | Preferred for body text |
| #38437A text on black | 2.25:1 | Fails | Lc -11.0 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B1BEEF
oklch(80.8% 0.071 273.1)
-
Step 400
400
#8A9BE6
oklch(70.6% 0.112 273.5)
-
Step 500
500
#6E81DF
oklch(63.1% 0.143 273.1)
-
Step 600
600
#5768CD
oklch(55.6% 0.156 273.1)
-
Step 700
700
#4756B1
oklch(49% 0.145 272.9)
-
Step 800
800
#3B4790
oklch(42.8% 0.12 273.2)
-
Step 900
900 (this color)
#38437A
oklch(40.2% 0.093 273)
-
Step 950
950
#1D2443
oklch(27.1% 0.058 272.4)
#38437A 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) | #2C4A7C | 0.023 |
| Deuteranopia (no green cones) | #254479 | 0.024 |
| Tritanopia (no blue cones) | #1A4F58 | 0.084 |
| Achromatopsia (no color) | #474747 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #38437A
#38437A
oklch(40.2% 0.093 273)
- #574600
#574600
oklch(40% 0.082 93)
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 #38437A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Cobalt #1E488F ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- Light Navy #155084 ΔE 0.046
- Dusk Blue #26538D ΔE 0.052
- Blueberry #464196 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.058
- Twilight #4E518B ΔE 0.059
Use #38437A 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.