#2943B2
Closest named color: Sapphire (#2138AB). oklch(43.7% 0.178 267.8), rgb(41, 67, 178).
Aa
White text reads best on this color (8.26:1).
About this color
#2943B2 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.178 and its hue 268°. 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 8.26:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #2943B2 |
| RGB | rgb(41, 67, 178) |
| HSL | hsl(229, 63%, 43%) |
| OKLCH | oklch(43.7% 0.178 267.8) |
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 #2943B2 | 8.26:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #2943B2 | 2.54:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #2943B2 text on white | 8.26:1 | AAA | Lc 87.9 | Fine for body text |
| #2943B2 text on black | 2.54:1 | Fails | Lc -14.2 | 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
#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
#789BFF
oklch(70.8% 0.152 267.9)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#3B5EF8
oklch(55.5% 0.232 267.8)
-
Step 700
700
#2F4CD8
oklch(49.1% 0.215 267.9)
-
Step 800
800 (this color)
#2943B2
oklch(43.7% 0.178 267.8)
-
Step 900
900
#22388A
oklch(37.7% 0.139 267.7)
-
Step 950
950
#142251
oklch(27.1% 0.088 267.6)
#2943B2 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) | #0055B6 | 0.045 |
| Deuteranopia (no green cones) | #0048B0 | 0.025 |
| Tritanopia (no blue cones) | #006074 | 0.140 |
| Achromatopsia (no color) | #4E4E4E | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2943B2
#2943B2
oklch(43.7% 0.178 267.8)
- #664E00
#664E00
oklch(43.7% 0.089 88.2)
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 #2943B2, closest first.
No curated palette has a color within ΔE 0.04 of #2943B2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.031
- Blue Blue #2242C7 ΔE 0.034
- Majorelle Blue #3F37C9 ΔE 0.048
- Blueberry #464196 ΔE 0.058
- Cobalt #1E488F ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
- Blurple #5539CC ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.074
Use #2943B2 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.