#151963
Closest named color: Midnight Blue (#191970). oklch(27.1% 0.127 271.9), rgb(21, 25, 99).
Aa
White text reads best on this color (15.54:1).
About this color
#151963 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.127 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.024 away. White text reads best on it, at 15.54:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.35:1 |
| White text | 15.54:1 |
Values
| HEX | #151963 |
| RGB | rgb(21, 25, 99) |
| HSL | hsl(237, 65%, 24%) |
| OKLCH | oklch(27.1% 0.127 271.9) |
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 #151963 | 15.54:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #151963 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #151963 text on white | 15.54:1 | AAA | Lc 101.9 | Preferred for body text |
| #151963 text on black | 1.35:1 | 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 950.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8098FF
oklch(70.7% 0.153 272.1)
-
Step 500
500
#627AFF
oklch(63.1% 0.198 271.8)
-
Step 600
600
#4957FF
oklch(55.6% 0.245 271.8)
-
Step 700
700
#3B29FF
oklch(49.2% 0.288 271.9)
-
Step 800
800
#2F1AD8
oklch(42.7% 0.258 271.8)
-
Step 900
900
#2624A9
oklch(37.7% 0.201 271.9)
-
Step 950
950 (this color)
#151963
oklch(27.1% 0.127 271.9)
#151963 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) | #002865 | 0.038 |
| Deuteranopia (no green cones) | #002062 | 0.023 |
| Tritanopia (no blue cones) | #002E3C | 0.100 |
| Achromatopsia (no color) | #242424 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151963
#151963
oklch(27.1% 0.127 271.9)
- #302500
#302500
oklch(26.9% 0.055 91.9)
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 #151963, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.024
- Darkblue #030764 ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.045
- Dark Royal Blue #02066F ΔE 0.045
- Deep Blue #040273 ΔE 0.050
- Marine #042E60 ΔE 0.055
- Navy #000080 ΔE 0.064
- Navy Blue #001146 ΔE 0.068
Use #151963 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.