#30659B
Closest named color: Denim (#3B638C). oklch(49.7% 0.104 251.1), rgb(48, 101, 155).
Aa
White text reads best on this color (6.06:1).
About this color
#30659B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.104 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.025 away. White text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #30659B |
| RGB | rgb(48, 101, 155) |
| HSL | hsl(210, 53%, 40%) |
| OKLCH | oklch(49.7% 0.104 251.1) |
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 #30659B | 6.06:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #30659B | 3.46:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #30659B text on white | 6.06:1 | AA | Lc 80.1 | Fine for body text |
| #30659B text on black | 3.46:1 | AA large text | Lc -21.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E1
oklch(81% 0.051 250.3)
-
Step 400
400
#7BA4D1
oklch(70.6% 0.08 251.3)
-
Step 500
500
#588DC5
oklch(63% 0.102 251)
-
Step 600
600
#3C76B2
oklch(55.5% 0.112 251.2)
-
Step 700
700 (this color)
#30659B
oklch(49.7% 0.104 251.1)
-
Step 800
800
#27517C
oklch(42.6% 0.086 251)
-
Step 900
900
#254464
oklch(37.8% 0.066 250.7)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#30659B 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) | #4D689D | 0.033 |
| Deuteranopia (no green cones) | #3E5E9A | 0.022 |
| Tritanopia (no blue cones) | #007279 | 0.080 |
| Achromatopsia (no color) | #626262 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30659B
#30659B
oklch(49.7% 0.104 251.1)
- #875709
#875709
oklch(49.8% 0.104 71.2)
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 #30659B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.025
- Peacock Blue #016795 ΔE 0.026
- Dusky Blue #475F94 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.030
- Ocean Blue #03719C ΔE 0.037
- Muted Blue #3B719F ΔE 0.038
- Mid Blue #276AB3 ΔE 0.038
- French Blue #436BAD ΔE 0.039
Use #30659B 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.