#123863
Closest named color: Marine Blue (#01386A). oklch(33.9% 0.087 254), rgb(18, 56, 99).
Aa
White text reads best on this color (11.85:1).
About this color
#123863 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.087 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.015 away. White text reads best on it, at 11.85:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.85:1 |
Values
| HEX | #123863 |
| RGB | rgb(18, 56, 99) |
| HSL | hsl(212, 69%, 23%) |
| OKLCH | oklch(33.9% 0.087 254) |
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 #123863 | 11.85:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #123863 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #123863 text on white | 11.85:1 | AAA | Lc 96.9 | Preferred for body text |
| #123863 text on black | 1.77:1 | 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 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C3EB
oklch(80.8% 0.066 254.9)
-
Step 400
400
#72A4E0
oklch(70.7% 0.103 253.6)
-
Step 500
500
#4B8CD8
oklch(63.2% 0.133 253.7)
-
Step 600
600
#2C74C5
oklch(55.6% 0.144 254)
-
Step 700
700
#1E61AA
oklch(49.1% 0.134 253.9)
-
Step 800
800
#1B4F8A
oklch(42.6% 0.112 254.2)
-
Step 900
900 (this color)
#123863
oklch(33.9% 0.087 254)
-
Step 950
950
#122741
oklch(27% 0.056 254.8)
#123863 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) | #233B65 | 0.021 |
| Deuteranopia (no green cones) | #163462 | 0.012 |
| Tritanopia (no blue cones) | #004248 | 0.066 |
| Achromatopsia (no color) | #373737 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123863
#123863
oklch(33.9% 0.087 254)
- #4D3100
#4D3100
oklch(33.9% 0.072 74.4)
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 #123863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.015
- Prussian Blue #1D3557 ΔE 0.022
- Marine #042E60 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.044
- Midnight Green #073B4C ΔE 0.046
- Twilight Blue #0A437A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.058
- Gunmetal #293241 ΔE 0.062
Use #123863 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.