#30447D
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.099 267.3), rgb(48, 68, 125).
Aa
White text reads best on this color (9.33:1).
About this color
#30447D is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.099 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.034 away. White text reads best on it, at 9.33:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #30447D |
| RGB | rgb(48, 68, 125) |
| HSL | hsl(224, 45%, 34%) |
| OKLCH | oklch(40.1% 0.099 267.3) |
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 #30447D | 9.33:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #30447D | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #30447D text on white | 9.33:1 | AAA | Lc 91.4 | Preferred for body text |
| #30447D text on black | 2.24:1 | Fails | Lc -11.0 | Not readable |
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 900.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F2
oklch(80.9% 0.075 267)
-
Step 400
400
#809DEB
oklch(70.6% 0.119 267.8)
-
Step 500
500
#6183E5
oklch(63.1% 0.152 267.5)
-
Step 600
600
#486AD3
oklch(55.5% 0.166 267.3)
-
Step 700
700
#3A58B7
oklch(49.1% 0.154 267.3)
-
Step 800
800
#304994
oklch(42.8% 0.127 267.1)
-
Step 900
900 (this color)
#30447D
oklch(40.1% 0.099 267.3)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#30447D 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) | #2A4A7F | 0.017 |
| Deuteranopia (no green cones) | #1F437C | 0.020 |
| Tritanopia (no blue cones) | #00515A | 0.088 |
| Achromatopsia (no color) | #474747 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30447D
#30447D
oklch(40.1% 0.099 267.3)
- #5B4400
#5B4400
oklch(40% 0.082 86.6)
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 #30447D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.034
- Twilight Blue #0A437A ΔE 0.034
- Light Navy #155084 ΔE 0.038
- Dusk Blue #26538D ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.051
- Blueberry #464196 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.062
Use #30447D 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.