#12304D
Closest named color: Prussian Blue (#1D3557). oklch(30.2% 0.064 250.1), rgb(18, 48, 77).
Aa
White text reads best on this color (13.49:1).
About this color
#12304D is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.064 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.027 away. White text reads best on it, at 13.49:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.55:1 |
| White text | 13.49:1 |
Values
| HEX | #12304D |
| RGB | rgb(18, 48, 77) |
| HSL | hsl(209, 62%, 19%) |
| OKLCH | oklch(30.2% 0.064 250.1) |
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 #12304D | 13.49:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #12304D | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #12304D text on white | 13.49:1 | AAA | Lc 99.8 | Preferred for body text |
| #12304D text on black | 1.55:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9CC5F0
oklch(80.9% 0.075 250)
-
Step 400
400
#63A5E9
oklch(70.6% 0.121 250.6)
-
Step 500
500
#2F8DE2
oklch(63.1% 0.154 250)
-
Step 600
600
#0076CB
oklch(55.7% 0.158 250)
-
Step 700
700
#0063AC
oklch(49.2% 0.139 250)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#084374
oklch(37.6% 0.101 250)
-
Step 950
950 (this color)
#12304D
oklch(30.2% 0.064 250.1)
#12304D 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) | #23314E | 0.021 |
| Deuteranopia (no green cones) | #1B2C4C | 0.015 |
| Tritanopia (no blue cones) | #00373A | 0.050 |
| Achromatopsia (no color) | #2E2E2E | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12304D
#12304D
oklch(30.2% 0.064 250.1)
- #422802
#422802
oklch(30.2% 0.063 70.8)
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 #12304D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.036
- Marine #042E60 ΔE 0.037
- Gunmetal #293241 ΔE 0.037
- Midnight Green #073B4C ΔE 0.037
- Oxford Blue #1B263B ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.042
- Marine Blue #01386A ΔE 0.053
Use #12304D 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.