#35397B
Closest named color: Dark Slate Blue (#483D8B). oklch(37.9% 0.11 277.1), rgb(53, 57, 123).
Aa
White text reads best on this color (10.38:1).
About this color
#35397B is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.110 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.043 away. White text reads best on it, at 10.38:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.02:1 |
| White text | 10.38:1 |
Values
| HEX | #35397B |
| RGB | rgb(53, 57, 123) |
| HSL | hsl(237, 40%, 35%) |
| OKLCH | oklch(37.9% 0.11 277.1) |
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 #35397B | 10.38:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #35397B | 2.02:1 | Fails | Lc 10.1 | Not readable |
| #35397B text on white | 10.38:1 | AAA | Lc 93.9 | Preferred for body text |
| #35397B text on black | 2.02:1 | Fails | Lc -8.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B3BCF6
oklch(80.9% 0.083 277.5)
-
Step 400
400
#8C98F2
oklch(70.8% 0.132 276.7)
-
Step 500
500
#727BED
oklch(63.1% 0.169 277)
-
Step 600
600
#5D61DC
oklch(55.7% 0.184 277.2)
-
Step 700
700
#4D4FBE
oklch(49% 0.17 277.3)
-
Step 800
800
#3F429A
oklch(42.8% 0.141 277.2)
-
Step 900
900 (this color)
#35397B
oklch(37.9% 0.11 277.1)
-
Step 950
950
#1F2248
oklch(27.1% 0.07 277.3)
#35397B 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) | #16437D | 0.040 |
| Deuteranopia (no green cones) | #0A3D7A | 0.043 |
| Tritanopia (no blue cones) | #124854 | 0.097 |
| Achromatopsia (no color) | #404040 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #35397B
#35397B
oklch(37.9% 0.11 277.1)
- #4E4200
#4E4200
oklch(38% 0.078 97.4)
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 #35397B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.043
- Twilight Blue #0A437A ΔE 0.046
- Cobalt #1E488F ΔE 0.052
- Blueberry #464196 ΔE 0.057
- Marine Blue #01386A ΔE 0.061
- Light Navy #155084 ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.073
- Dusk Blue #26538D ΔE 0.075
Use #35397B 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.