#123964
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.087 253.6), rgb(18, 57, 100).
Aa
White text reads best on this color (11.69:1).
About this color
#123964 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 11.69:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.69:1 |
Values
| HEX | #123964 |
| RGB | rgb(18, 57, 100) |
| HSL | hsl(211, 69%, 23%) |
| OKLCH | oklch(34.2% 0.087 253.6) |
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 #123964 | 11.69:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #123964 | 1.79:1 | Fails | Lc 7.3 | Not readable |
| #123964 text on white | 11.69:1 | AAA | Lc 96.6 | Preferred for body text |
| #123964 text on black | 1.79:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
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
#A4C4EB
oklch(81% 0.065 253.6)
-
Step 400
400
#71A4E0
oklch(70.7% 0.104 253.2)
-
Step 500
500
#4A8CD8
oklch(63.2% 0.134 253.5)
-
Step 600
600
#2A74C5
oklch(55.5% 0.145 253.6)
-
Step 700
700
#1C61AA
oklch(49% 0.134 253.5)
-
Step 800
800
#1A508A
oklch(42.8% 0.111 253.3)
-
Step 900
900 (this color)
#123964
oklch(34.2% 0.087 253.6)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#123964 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) | #243C66 | 0.022 |
| Deuteranopia (no green cones) | #173563 | 0.012 |
| Tritanopia (no blue cones) | #004349 | 0.066 |
| Achromatopsia (no color) | #383838 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123964
#123964
oklch(34.2% 0.087 253.6)
- #4F3200
#4F3200
oklch(34.4% 0.073 73.9)
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 #123964, 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 0.025
- Marine #042E60 ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.045
- Midnight Green #073B4C ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.056
- Charcoal #264653 ΔE 0.062
Use #123964 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.