#012AAB
Closest named color: Sapphire (#2138AB). oklch(37.5% 0.205 263.8), rgb(1, 42, 171).
Aa
White text reads best on this color (10.93:1).
About this color
#012AAB is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.205 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.041 away. White text reads best on it, at 10.93:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 1.92:1 |
| White text | 10.93:1 |
Values
| HEX | #012AAB |
| RGB | rgb(1, 42, 171) |
| HSL | hsl(226, 99%, 34%) |
| OKLCH | oklch(37.5% 0.205 263.8) |
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 #012AAB | 10.93:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #012AAB | 1.92:1 | Fails | Lc 10.1 | Not readable |
| #012AAB text on white | 10.93:1 | AAA | Lc 93.9 | Preferred for body text |
| #012AAB text on black | 1.92:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4980FF
oklch(63% 0.198 264)
-
Step 600
600
#215FFF
oklch(55.5% 0.245 263.8)
-
Step 700
700
#003EF8
oklch(49.1% 0.274 263.8)
-
Step 800
800
#0032CE
oklch(42.7% 0.238 263.8)
-
Step 900
900 (this color)
#012AAB
oklch(37.5% 0.205 263.8)
-
Step 950
950
#031C64
oklch(27% 0.13 263.7)
#012AAB 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) | #0044AF | 0.057 |
| Deuteranopia (no green cones) | #0034A9 | 0.020 |
| Tritanopia (no blue cones) | #005168 | 0.156 |
| Achromatopsia (no color) | #3D3D3D | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #012AAB
#012AAB
oklch(37.5% 0.205 263.8)
- #543D00
#543D00
oklch(37.5% 0.077 84.5)
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 #012AAB, closest first.
No curated palette has a color within ΔE 0.04 of #012AAB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.041
- Ultramarine #2000B1 ΔE 0.042
- Cobalt Blue #030AA7 ΔE 0.043
- Royal #0C1793 ΔE 0.055
- True Blue #010FCC ΔE 0.056
- Indigo Blue #3A18B1 ΔE 0.060
- Medium Blue #0000CD ΔE 0.061
- Blue Blue #2242C7 ΔE 0.078
Use #012AAB 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.