#2D43AB
Closest named color: Sapphire (#2138AB). oklch(43.3% 0.168 269), rgb(45, 67, 171).
Aa
White text reads best on this color (8.39:1).
About this color
#2D43AB is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.168 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 8.39:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #2D43AB |
| RGB | rgb(45, 67, 171) |
| HSL | hsl(230, 58%, 42%) |
| OKLCH | oklch(43.3% 0.168 269) |
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 #2D43AB | 8.39:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #2D43AB | 2.50:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #2D43AB text on white | 8.39:1 | AAA | Lc 88.4 | Fine for body text |
| #2D43AB 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD8FE
oklch(88.4% 0.055 269.3)
-
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
#4260F0
oklch(55.5% 0.218 269)
-
Step 700
700
#354ED1
oklch(49% 0.203 269)
-
Step 800
800 (this color)
#2D43AB
oklch(43.3% 0.168 269)
-
Step 900
900
#263986
oklch(37.7% 0.131 268.8)
-
Step 950
950
#16224E
oklch(26.9% 0.083 268.8)
#2D43AB 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) | #0053AE | 0.043 |
| Deuteranopia (no green cones) | #0048A9 | 0.029 |
| Tritanopia (no blue cones) | #005D70 | 0.133 |
| Achromatopsia (no color) | #4D4D4D | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D43AB
#2D43AB
oklch(43.3% 0.168 269)
- #644D00
#644D00
oklch(43.2% 0.088 88.8)
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 #2D43AB, closest first.
No curated palette has a color within ΔE 0.04 of #2D43AB.
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 0.046
- Blueberry #464196 ΔE 0.047
- Cobalt #1E488F ΔE 0.050
- Majorelle Blue #3F37C9 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.064
- Dusk Blue #26538D ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
Use #2D43AB 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.