#1F2CA2
Closest named color: Sapphire (#2138AB). oklch(37.7% 0.187 269.2), rgb(31, 44, 162).
Aa
White text reads best on this color (10.82:1).
About this color
#1F2CA2 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.187 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.031 away. White text reads best on it, at 10.82:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 1.94:1 |
| White text | 10.82:1 |
Values
| HEX | #1F2CA2 |
| RGB | rgb(31, 44, 162) |
| HSL | hsl(234, 68%, 38%) |
| OKLCH | oklch(37.7% 0.187 269.2) |
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 #1F2CA2 | 10.82:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #1F2CA2 | 1.94:1 | Fails | Lc 9.8 | Not readable |
| #1F2CA2 text on white | 10.82:1 | AAA | Lc 94.1 | Preferred for body text |
| #1F2CA2 text on black | 1.94:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5A7CFF
oklch(63% 0.198 269.1)
-
Step 600
600
#3F5AFF
oklch(55.6% 0.244 269.2)
-
Step 700
700
#2F2FFF
oklch(49.1% 0.287 269.2)
-
Step 800
800
#252BCF
oklch(42.8% 0.24 269.1)
-
Step 900
900 (this color)
#1F2CA2
oklch(37.7% 0.187 269.2)
-
Step 950
950
#111C5F
oklch(27% 0.119 269.1)
#1F2CA2 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) | #0044A6 | 0.053 |
| Deuteranopia (no green cones) | #0037A0 | 0.026 |
| Tritanopia (no blue cones) | #004E64 | 0.144 |
| Achromatopsia (no color) | #3D3D3D | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2CA2
#1F2CA2
oklch(37.7% 0.187 269.2)
- #523F00
#523F00
oklch(37.8% 0.077 89.3)
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 #1F2CA2, closest first.
No curated palette has a color within ΔE 0.04 of #1F2CA2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.031
- Indigo Blue #3A18B1 ΔE 0.047
- Ultramarine #2000B1 ΔE 0.050
- Royal #0C1793 ΔE 0.055
- Cobalt Blue #030AA7 ΔE 0.057
- Imperial Purple #480CA8 ΔE 0.070
- Cobalt #1E488F ΔE 0.074
- True Blue #010FCC ΔE 0.077
Use #1F2CA2 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.