#18314F
Closest named color: Prussian Blue (#1D3557). oklch(30.9% 0.063 254.1), rgb(24, 49, 79).
Aa
White text reads best on this color (13.19:1).
About this color
#18314F is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.063 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.019 away. White text reads best on it, at 13.19:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.19:1 |
Values
| HEX | #18314F |
| RGB | rgb(24, 49, 79) |
| HSL | hsl(213, 53%, 20%) |
| OKLCH | oklch(30.9% 0.063 254.1) |
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 #18314F | 13.19:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #18314F | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #18314F text on white | 13.19:1 | AAA | Lc 99.4 | Preferred for body text |
| #18314F text on black | 1.59:1 | 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#A0C4F0
oklch(81% 0.074 253.7)
-
Step 400
400
#6BA4E9
oklch(70.8% 0.118 254)
-
Step 500
500
#408BE2
oklch(63.1% 0.151 254.1)
-
Step 600
600
#1973D0
oklch(55.6% 0.164 254)
-
Step 700
700
#0760B4
oklch(49.2% 0.152 253.9)
-
Step 800
800
#0D4F92
oklch(42.8% 0.126 253.8)
-
Step 900
900
#154274
oklch(37.7% 0.098 253.8)
-
Step 950
950 (this color)
#18314F
oklch(30.9% 0.063 254.1)
#18314F 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) | #243350 | 0.017 |
| Deuteranopia (no green cones) | #1D2E4E | 0.010 |
| Tritanopia (no blue cones) | #00383C | 0.051 |
| Achromatopsia (no color) | #303030 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18314F
#18314F
oklch(30.9% 0.063 254.1)
- #432B03
#432B03
oklch(31.1% 0.063 74.5)
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 #18314F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.019
- Space Cadet #2B2D42 ΔE 0.033
- Gunmetal #293241 ΔE 0.034
- Midnight Green #073B4C ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.037
- Marine #042E60 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.046
- Marine Blue #01386A ΔE 0.049
Use #18314F 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.