#18314A
Closest named color: Prussian Blue (#1D3557). oklch(30.6% 0.055 250.1), rgb(24, 49, 74).
Aa
White text reads best on this color (13.31:1).
About this color
#18314A is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.055 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.026 away. White text reads best on it, at 13.31:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.57:1 |
| White text | 13.31:1 |
Values
| HEX | #18314A |
| RGB | rgb(24, 49, 74) |
| HSL | hsl(210, 51%, 19%) |
| OKLCH | oklch(30.6% 0.055 250.1) |
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 #18314A | 13.31:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #18314A | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #18314A text on white | 13.31:1 | AAA | Lc 99.6 | Preferred for body text |
| #18314A text on black | 1.57:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF1
oklch(88.6% 0.036 249.5)
-
Step 300
300
#A1C5EA
oklch(81% 0.065 249.3)
-
Step 400
400
#6DA5DF
oklch(70.7% 0.104 250.3)
-
Step 500
500
#428ED6
oklch(63.2% 0.132 249.6)
-
Step 600
600
#1B76C4
oklch(55.6% 0.145 250.1)
-
Step 700
700
#0A63A9
oklch(49.1% 0.134 249.9)
-
Step 800
800
#0F5189
oklch(42.7% 0.112 250)
-
Step 900
900
#17446E
oklch(37.9% 0.087 250)
-
Step 950
950 (this color)
#18314A
oklch(30.6% 0.055 250.1)
#18314A 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) | #26324B | 0.019 |
| Deuteranopia (no green cones) | #202D4A | 0.015 |
| Tritanopia (no blue cones) | #00373A | 0.045 |
| Achromatopsia (no color) | #2F2F2F | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18314A
#18314A
oklch(30.6% 0.055 250.1)
- #412A0C
#412A0C
oklch(30.7% 0.055 70)
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 #18314A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.026
- Gunmetal #293241 ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.029
- Midnight Green #073B4C ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.035
- Oxford Blue #1B263B ΔE 0.041
- Marine #042E60 ΔE 0.045
- Dark #1B2431 ΔE 0.056
Use #18314A 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.