#30759D
Closest named color: Muted Blue (#3B719F). oklch(53.7% 0.093 237.6), rgb(48, 117, 157).
Aa
White text reads best on this color (5.05:1).
About this color
#30759D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.093 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #30759D |
| RGB | rgb(48, 117, 157) |
| HSL | hsl(202, 53%, 40%) |
| OKLCH | oklch(53.7% 0.093 237.6) |
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 #30759D | 5.05:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #30759D | 4.15:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #30759D text on white | 5.05:1 | AA | Lc 74.6 | Content text, not long reading |
| #30759D text on black | 4.15:1 | AA large text | Lc -27.1 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A8C5D9
oklch(80.8% 0.042 238.2)
-
Step 400
400
#79A7C6
oklch(70.7% 0.067 238.4)
-
Step 500
500
#5491B7
oklch(63.1% 0.086 237.6)
-
Step 600
600 (this color)
#30759D
oklch(53.7% 0.093 237.6)
-
Step 700
700
#28678C
oklch(49% 0.087 238.1)
-
Step 800
800
#235471
oklch(42.6% 0.071 237.7)
-
Step 900
900
#22465C
oklch(37.8% 0.056 237.6)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#30759D 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) | #62759F | 0.053 |
| Deuteranopia (no green cones) | #536A9C | 0.043 |
| Tritanopia (no blue cones) | #007F83 | 0.062 |
| Achromatopsia (no color) | #6F6F6F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30759D
#30759D
oklch(53.7% 0.093 237.6)
- #965F33
#965F33
oklch(53.7% 0.093 57.6)
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 #30759D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Dull Blue #49759C ΔE 0.022
- Flat Blue #3C73A8 ΔE 0.023
- Sea Blue #047495 ΔE 0.025
- Ocean Blue #03719C ΔE 0.025
- Cerulean #457B9D ΔE 0.028
- Nice Blue #107AB0 ΔE 0.031
- Ocean #017B92 ΔE 0.034
Use #30759D 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.