#124179
Closest named color: Twilight Blue (#0A437A). oklch(37.7% 0.108 255.4), rgb(18, 65, 121).
Aa
White text reads best on this color (10.20:1).
About this color
#124179 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.108 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.006 away. White text reads best on it, at 10.20:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #124179 |
| RGB | rgb(18, 65, 121) |
| HSL | hsl(213, 74%, 27%) |
| OKLCH | oklch(37.7% 0.108 255.4) |
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 #124179 | 10.20:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #124179 | 2.05:1 | Fails | Lc 10.7 | Not readable |
| #124179 text on white | 10.20:1 | AAA | Lc 93.3 | Preferred for body text |
| #124179 text on black | 2.05:1 | Fails | Lc -9.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC3F5
oklch(80.8% 0.082 256.1)
-
Step 400
400
#67A3F0
oklch(70.7% 0.13 255.3)
-
Step 500
500
#3B89EA
oklch(63% 0.165 255.6)
-
Step 600
600
#0E71D9
oklch(55.7% 0.179 255.4)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800
#064D98
oklch(42.7% 0.138 255.4)
-
Step 900
900 (this color)
#124179
oklch(37.7% 0.108 255.4)
-
Step 950
950
#0C2647
oklch(26.9% 0.069 255.8)
#124179 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) | #24467B | 0.023 |
| Deuteranopia (no green cones) | #0D3D78 | 0.013 |
| Tritanopia (no blue cones) | #004E57 | 0.080 |
| Achromatopsia (no color) | #414141 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #124179
#124179
oklch(37.7% 0.108 255.4)
- #5A3A00
#5A3A00
oklch(37.7% 0.08 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 #124179, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.006
- Marine Blue #01386A ΔE 0.039
- Cobalt #1E488F ΔE 0.043
- Light Navy #155084 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.064
- Dusk Blue #26538D ΔE 0.064
Use #124179 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.