#30409E
Closest named color: Sapphire (#2138AB). oklch(41.8% 0.153 270.9), rgb(48, 64, 158).
Aa
White text reads best on this color (8.92:1).
About this color
#30409E is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.153 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.034 away. White text reads best on it, at 8.92:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #30409E |
| RGB | rgb(48, 64, 158) |
| HSL | hsl(231, 53%, 40%) |
| OKLCH | oklch(41.8% 0.153 270.9) |
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 #30409E | 8.92:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #30409E | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #30409E text on white | 8.92:1 | AAA | Lc 90.0 | Preferred for body text |
| #30409E text on black | 2.35:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ABBEFB
oklch(80.9% 0.089 270.9)
-
Step 400
400
#809AF9
oklch(70.7% 0.142 270.8)
-
Step 500
500
#627DF6
oklch(63.1% 0.182 270.9)
-
Step 600
600
#4B63E5
oklch(55.6% 0.198 270.7)
-
Step 700
700
#3D51C7
oklch(49.1% 0.184 270.7)
-
Step 800
800 (this color)
#30409E
oklch(41.8% 0.153 270.9)
-
Step 900
900
#2B3A80
oklch(37.8% 0.119 270.6)
-
Step 950
950
#19224B
oklch(26.9% 0.077 271.1)
#30409E 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) | #004FA1 | 0.044 |
| Deuteranopia (no green cones) | #00459C | 0.034 |
| Tritanopia (no blue cones) | #005768 | 0.125 |
| Achromatopsia (no color) | #4A4A4A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30409E
#30409E
oklch(41.8% 0.153 270.9)
- #5E4A00
#5E4A00
oklch(41.8% 0.085 90.9)
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 #30409E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.034
- Blueberry #464196 ΔE 0.034
- Cobalt #1E488F ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.046
- Dusk Blue #26538D ΔE 0.061
- Blue Blue #2242C7 ΔE 0.067
- Light Navy #155084 ΔE 0.067
- Twilight Blue #0A437A ΔE 0.070
Use #30409E 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.