#2A3592
Closest named color: Sapphire (#2138AB). oklch(38.2% 0.152 271.8), rgb(42, 53, 146).
Aa
White text reads best on this color (10.38:1).
About this color
#2A3592 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.152 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.042 away. White text reads best on it, at 10.38:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.02:1 |
| White text | 10.38:1 |
Values
| HEX | #2A3592 |
| RGB | rgb(42, 53, 146) |
| HSL | hsl(234, 55%, 37%) |
| OKLCH | oklch(38.2% 0.152 271.8) |
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 #2A3592 | 10.38:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #2A3592 | 2.02:1 | Fails | Lc 10.4 | Not readable |
| #2A3592 text on white | 10.38:1 | AAA | Lc 93.6 | Preferred for body text |
| #2A3592 text on black | 2.02:1 | Fails | Lc -8.9 | 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
#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
#3B42E3
oklch(49.1% 0.236 271.8)
-
Step 800
800
#3039B7
oklch(42.8% 0.195 271.7)
-
Step 900
900 (this color)
#2A3592
oklch(38.2% 0.152 271.8)
-
Step 950
950
#171F54
oklch(26.9% 0.096 271.8)
#2A3592 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) | #004595 | 0.045 |
| Deuteranopia (no green cones) | #003B90 | 0.033 |
| Tritanopia (no blue cones) | #004D5E | 0.123 |
| Achromatopsia (no color) | #404040 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3592
#2A3592
oklch(38.2% 0.152 271.8)
- #524100
#524100
oklch(38.2% 0.078 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 #2A3592, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.042
- Cobalt #1E488F ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.061
- Indigo Blue #3A18B1 ΔE 0.067
- Royal #0C1793 ΔE 0.074
- Imperial Purple #480CA8 ΔE 0.077
Use #2A3592 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.