#30588A
Closest named color: Light Navy Blue (#2E5A88). oklch(45.6% 0.094 255), rgb(48, 88, 138).
Aa
White text reads best on this color (7.27:1).
About this color
#30588A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.094 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.008 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #30588A |
| RGB | rgb(48, 88, 138) |
| HSL | hsl(213, 48%, 36%) |
| OKLCH | oklch(45.6% 0.094 255) |
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 #30588A | 7.27:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #30588A | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #30588A text on white | 7.27:1 | AAA | Lc 85.1 | Fine for body text |
| #30588A text on black | 2.88:1 | Fails | Lc -17.0 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500
#598CCC
oklch(63.2% 0.112 254.8)
-
Step 600
600
#3D75B9
oklch(55.7% 0.122 254.6)
-
Step 700
700
#2F629F
oklch(49.2% 0.113 254.4)
-
Step 800
800 (this color)
#30588A
oklch(45.6% 0.094 255)
-
Step 900
900
#254368
oklch(37.8% 0.073 254.6)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#30588A 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) | #425B8C | 0.024 |
| Deuteranopia (no green cones) | #365389 | 0.015 |
| Tritanopia (no blue cones) | #00636A | 0.076 |
| Achromatopsia (no color) | #575757 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30588A
#30588A
oklch(45.6% 0.094 255)
- #754E05
#754E05
oklch(45.6% 0.094 75)
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 #30588A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.008
- Dusk Blue #26538D ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy #155084 ΔE 0.036
- Denim #3B638C ΔE 0.036
- YInMn Blue #415A77 ΔE 0.038
- Dusk #4E5481 ΔE 0.038
Use #30588A 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.