#154178
Closest named color: Twilight Blue (#0A437A). oklch(37.7% 0.105 256), rgb(21, 65, 120).
Aa
White text reads best on this color (10.19:1).
About this color
#154178 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.105 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.008 away. White text reads best on it, at 10.19:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.05:1 |
| White text | 10.19:1 |
Values
| HEX | #154178 |
| RGB | rgb(21, 65, 120) |
| HSL | hsl(213, 70%, 28%) |
| OKLCH | oklch(37.7% 0.105 256) |
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 #154178 | 10.19:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #154178 | 2.05:1 | Fails | Lc 10.6 | Not readable |
| #154178 text on white | 10.19:1 | AAA | Lc 93.3 | Preferred for body text |
| #154178 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#9FC3F4
oklch(80.8% 0.08 256.2)
-
Step 400
400
#6AA3EE
oklch(70.8% 0.126 255.7)
-
Step 500
500
#3F89E9
oklch(63.1% 0.162 256.2)
-
Step 600
600
#1871D7
oklch(55.7% 0.176 255.9)
-
Step 700
700
#075EBA
oklch(49.1% 0.163 255.8)
-
Step 800
800
#0D4D97
oklch(42.7% 0.136 256)
-
Step 900
900 (this color)
#154178
oklch(37.7% 0.105 256)
-
Step 950
950
#0E2646
oklch(26.9% 0.067 256.5)
#154178 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) | #25467A | 0.023 |
| Deuteranopia (no green cones) | #113D77 | 0.013 |
| Tritanopia (no blue cones) | #004E56 | 0.081 |
| Achromatopsia (no color) | #414141 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #154178
#154178
oklch(37.7% 0.105 256)
- #593B00
#593B00
oklch(37.8% 0.079 76.7)
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 #154178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.008
- 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 0.058
- Prussian Blue #1D3557 ΔE 0.062
- Dusk Blue #26538D ΔE 0.064
Use #154178 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.