#3D599D
Closest named color: Denim Blue (#3B5B92). oklch(47.7% 0.115 265.4), rgb(61, 89, 157).
Aa
White text reads best on this color (6.74:1).
About this color
#3D599D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.115 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.020 away. White text reads best on it, at 6.74:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.11:1 |
| White text | 6.74:1 |
Values
| HEX | #3D599D |
| RGB | rgb(61, 89, 157) |
| HSL | hsl(223, 44%, 43%) |
| OKLCH | oklch(47.7% 0.115 265.4) |
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 #3D599D | 6.74:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #3D599D | 3.11:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #3D599D text on white | 6.74:1 | AA | Lc 83.0 | Fine for body text |
| #3D599D text on black | 3.11:1 | AA large text | Lc -18.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400
#86A0D9
oklch(70.8% 0.089 265.3)
-
Step 500
500
#6887CE
oklch(63.1% 0.113 265.4)
-
Step 600
600
#5070BB
oklch(55.6% 0.123 265.2)
-
Step 700
700 (this color)
#3D599D
oklch(47.7% 0.115 265.4)
-
Step 800
800
#354C83
oklch(42.6% 0.096 265.4)
-
Step 900
900
#2E4069
oklch(37.7% 0.074 265.1)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#3D599D 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) | #3B60A0 | 0.019 |
| Deuteranopia (no green cones) | #2D579C | 0.019 |
| Tritanopia (no blue cones) | #006873 | 0.100 |
| Achromatopsia (no color) | #5B5B5B | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D599D
#3D599D
oklch(47.7% 0.115 265.4)
- #755700
#755700
oklch(47.5% 0.097 85.3)
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 #3D599D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.020
- Dusky Blue #475F94 ΔE 0.028
- Twilight #4E518B ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk Blue #26538D ΔE 0.041
- Denim #3B638C ΔE 0.044
- Dusk #4E5481 ΔE 0.048
- Mid Blue #276AB3 ΔE 0.054
Use #3D599D 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.