#123B86
Closest named color: Twilight Blue (#0A437A). oklch(37.3% 0.134 261.3), rgb(18, 59, 134).
Aa
White text reads best on this color (10.52:1).
About this color
#123B86 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.134 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.032 away. White text reads best on it, at 10.52:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.99:1 |
| White text | 10.52:1 |
Values
| HEX | #123B86 |
| RGB | rgb(18, 59, 134) |
| HSL | hsl(219, 76%, 30%) |
| OKLCH | oklch(37.3% 0.134 261.3) |
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 #123B86 | 10.52:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #123B86 | 1.99:1 | Fails | Lc 10.1 | Not readable |
| #123B86 text on white | 10.52:1 | AAA | Lc 93.9 | Preferred for body text |
| #123B86 text on black | 1.99:1 | Fails | Lc -8.7 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3E82FF
oklch(63% 0.199 261.3)
-
Step 600
600
#1766F3
oklch(55.6% 0.224 261.3)
-
Step 700
700
#0854D3
oklch(49.1% 0.207 261.2)
-
Step 800
800
#0C46AB
oklch(42.8% 0.172 261.1)
-
Step 900
900 (this color)
#123B86
oklch(37.3% 0.134 261.3)
-
Step 950
950
#0C244F
oklch(27% 0.085 261)
#123B86 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) | #004589 | 0.027 |
| Deuteranopia (no green cones) | #003A85 | 0.011 |
| Tritanopia (no blue cones) | #004E5A | 0.104 |
| Achromatopsia (no color) | #3F3F3F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123B86
#123B86
oklch(37.3% 0.134 261.3)
- #553C00
#553C00
oklch(37.4% 0.077 82.1)
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 #123B86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.032
- Cobalt #1E488F ΔE 0.041
- Marine Blue #01386A ΔE 0.050
- Light Navy #155084 ΔE 0.062
- Sapphire #2138AB ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.070
- Blueberry #464196 ΔE 0.073
- Dusk Blue #26538D ΔE 0.074
Use #123B86 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.