#30589B
Closest named color: Denim Blue (#3B5B92). oklch(46.6% 0.118 260.1), rgb(48, 88, 155).
Aa
White text reads best on this color (7.01:1).
About this color
#30589B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.118 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.022 away. White text reads best on it, at 7.01:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #30589B |
| RGB | rgb(48, 88, 155) |
| HSL | hsl(218, 53%, 40%) |
| OKLCH | oklch(46.6% 0.118 260.1) |
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 #30589B | 7.01:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #30589B | 2.99:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #30589B text on white | 7.01:1 | AAA | Lc 84.0 | Fine for body text |
| #30589B text on black | 2.99:1 | Fails | Lc -17.9 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ACC2E6
oklch(81% 0.056 260.2)
-
Step 400
400
#7FA2DA
oklch(70.8% 0.091 259.6)
-
Step 500
500
#5F89D0
oklch(63.1% 0.117 260.4)
-
Step 600
600
#4572BD
oklch(55.6% 0.127 260.1)
-
Step 700
700 (this color)
#30589B
oklch(46.6% 0.118 260.1)
-
Step 800
800
#2E4E84
oklch(42.7% 0.098 260.3)
-
Step 900
900
#29416A
oklch(37.7% 0.077 260.5)
-
Step 950
950
#18263E
oklch(26.9% 0.049 260.7)
#30589B 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) | #385E9E | 0.020 |
| Deuteranopia (no green cones) | #27549A | 0.015 |
| Tritanopia (no blue cones) | #006772 | 0.094 |
| Achromatopsia (no color) | #595959 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30589B
#30589B
oklch(46.6% 0.118 260.1)
- #765300
#765300
oklch(46.8% 0.097 80.4)
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 #30589B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.022
- Dusk Blue #26538D ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.038
- Twilight #4E518B ΔE 0.044
- Denim #3B638C ΔE 0.047
- Peacock Blue #016795 ΔE 0.049
- Light Navy #155084 ΔE 0.050
Use #30589B 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.