#1A2CA3
Closest named color: Sapphire (#2138AB). oklch(37.6% 0.189 267.8), rgb(26, 44, 163).
Aa
White text reads best on this color (10.86:1).
About this color
#1A2CA3 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.189 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.032 away. White text reads best on it, at 10.86:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #1A2CA3 |
| RGB | rgb(26, 44, 163) |
| HSL | hsl(232, 72%, 37%) |
| OKLCH | oklch(37.6% 0.189 267.8) |
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 #1A2CA3 | 10.86:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #1A2CA3 | 1.93:1 | Fails | Lc 9.8 | Not readable |
| #1A2CA3 text on white | 10.86:1 | AAA | Lc 94.1 | Preferred for body text |
| #1A2CA3 text on black | 1.93:1 | Fails | Lc -8.4 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#395BFF
oklch(55.6% 0.245 267.9)
-
Step 700
700
#2732FF
oklch(49.2% 0.286 267.7)
-
Step 800
800
#1F2BD0
oklch(42.7% 0.242 267.8)
-
Step 900
900 (this color)
#1A2CA3
oklch(37.6% 0.189 267.8)
-
Step 950
950
#0E1C60
oklch(26.9% 0.121 267.7)
#1A2CA3 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) | #0044A7 | 0.053 |
| Deuteranopia (no green cones) | #0036A1 | 0.022 |
| Tritanopia (no blue cones) | #004E64 | 0.145 |
| Achromatopsia (no color) | #3D3D3D | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A2CA3
#1A2CA3
oklch(37.6% 0.189 267.8)
- #523E00
#523E00
oklch(37.5% 0.077 88)
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 #1A2CA3, closest first.
No curated palette has a color within ΔE 0.04 of #1A2CA3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.032
- Ultramarine #2000B1 ΔE 0.048
- Indigo Blue #3A18B1 ΔE 0.050
- Royal #0C1793 ΔE 0.053
- Cobalt Blue #030AA7 ΔE 0.054
- True Blue #010FCC ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.075
- Cobalt #1E488F ΔE 0.076
Use #1A2CA3 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.