#30657F
Closest named color: Denim (#3B638C). oklch(48.2% 0.07 232.1), rgb(48, 101, 127).
Aa
White text reads best on this color (6.37:1).
About this color
#30657F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.070 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.027 away. White text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #30657F |
| RGB | rgb(48, 101, 127) |
| HSL | hsl(200, 45%, 34%) |
| OKLCH | oklch(48.2% 0.07 232.1) |
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 #30657F | 6.37:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #30657F | 3.29:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #30657F text on white | 6.37:1 | AA | Lc 81.5 | Fine for body text |
| #30657F text on black | 3.29:1 | AA large text | Lc -20.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#7FA7BD
oklch(70.7% 0.054 232.6)
-
Step 500
500
#5D91AC
oklch(63.1% 0.069 232)
-
Step 600
600
#417B98
oklch(55.6% 0.076 232.1)
-
Step 700
700 (this color)
#30657F
oklch(48.2% 0.07 232.1)
-
Step 800
800
#2B5569
oklch(42.8% 0.057 230.8)
-
Step 900
900
#274656
oklch(37.7% 0.046 232.3)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#30657F 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) | #586480 | 0.047 |
| Deuteranopia (no green cones) | #4D5C7F | 0.040 |
| Tritanopia (no blue cones) | #006C6E | 0.047 |
| Achromatopsia (no color) | #5F5F5F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30657F
#30657F
oklch(48.2% 0.07 232.1)
- #7E5338
#7E5338
oklch(48.3% 0.07 52.5)
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 #30657F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.027
- YInMn Blue #415A77 ΔE 0.034
- Peacock Blue #016795 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.041
- Slate #516572 ΔE 0.041
- Dark Aqua #05696B ΔE 0.047
- Petrol #005F6A ΔE 0.049
- Sea Blue #047495 ΔE 0.050
Use #30657F 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.