#2B42AF
Closest named color: Sapphire (#2138AB). oklch(43.4% 0.175 268.6), rgb(43, 66, 175).
Aa
White text reads best on this color (8.39:1).
About this color
#2B42AF is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.175 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 8.39:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #2B42AF |
| RGB | rgb(43, 66, 175) |
| HSL | hsl(230, 61%, 43%) |
| OKLCH | oklch(43.4% 0.175 268.6) |
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 #2B42AF | 8.39:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #2B42AF | 2.50:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2B42AF text on white | 8.39:1 | AAA | Lc 88.3 | Fine for body text |
| #2B42AF text on black | 2.50:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#597DFF
oklch(63.2% 0.197 268.6)
-
Step 600
600
#3F5FF6
oklch(55.7% 0.228 268.5)
-
Step 700
700
#324CD6
oklch(49% 0.212 268.6)
-
Step 800
800 (this color)
#2B42AF
oklch(43.4% 0.175 268.6)
-
Step 900
900
#253889
oklch(37.7% 0.137 268.9)
-
Step 950
950
#152250
oklch(27.1% 0.086 268.3)
#2B42AF 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) | #0054B3 | 0.046 |
| Deuteranopia (no green cones) | #0047AD | 0.027 |
| Tritanopia (no blue cones) | #005E72 | 0.138 |
| Achromatopsia (no color) | #4D4D4D | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B42AF
#2B42AF
oklch(43.4% 0.175 268.6)
- #654D00
#654D00
oklch(43.3% 0.089 87.9)
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 #2B42AF, closest first.
No curated palette has a color within ΔE 0.04 of #2B42AF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Blue Blue #2242C7 ΔE 0.039
- Majorelle Blue #3F37C9 ΔE 0.050
- Blueberry #464196 ΔE 0.053
- Cobalt #1E488F ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.072
Use #2B42AF 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.