#123680
Closest named color: Twilight Blue (#0A437A). oklch(35.7% 0.132 262.4), rgb(18, 54, 128).
Aa
White text reads best on this color (11.25:1).
About this color
#123680 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.132 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.039 away. White text reads best on it, at 11.25:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.86:1 |
| White text | 11.25:1 |
Values
| HEX | #123680 |
| RGB | rgb(18, 54, 128) |
| HSL | hsl(220, 75%, 29%) |
| OKLCH | oklch(35.7% 0.132 262.4) |
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 #123680 | 11.25:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #123680 | 1.86:1 | Fails | Lc 8.5 | Not readable |
| #123680 text on white | 11.25:1 | AAA | Lc 95.4 | Preferred for body text |
| #123680 text on black | 1.86:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFE
oklch(88.5% 0.054 262.2)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4381FF
oklch(63% 0.199 262.5)
-
Step 600
600
#2266F1
oklch(55.6% 0.22 262.3)
-
Step 700
700
#1653D2
oklch(49% 0.205 262.5)
-
Step 800
800
#1545AA
oklch(42.7% 0.17 262.5)
-
Step 900
900 (this color)
#123680
oklch(35.7% 0.132 262.4)
-
Step 950
950
#0E244F
oklch(27.1% 0.084 262)
#123680 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) | #004083 | 0.027 |
| Deuteranopia (no green cones) | #00367F | 0.010 |
| Tritanopia (no blue cones) | #004955 | 0.103 |
| Achromatopsia (no color) | #3B3B3B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123680
#123680
oklch(35.7% 0.132 262.4)
- #4F3800
#4F3800
oklch(35.7% 0.073 82.8)
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 #123680, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.039
- Marine Blue #01386A ΔE 0.041
- Cobalt #1E488F ΔE 0.057
- Marine #042E60 ΔE 0.061
- Royal #0C1793 ΔE 0.070
- Prussian Blue #1D3557 ΔE 0.071
- Sapphire #2138AB ΔE 0.074
- Midnight Blue #191970 ΔE 0.074
Use #123680 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.