#2C40A0
Closest named color: Sapphire (#2138AB). oklch(41.7% 0.157 269.4), rgb(44, 64, 160).
Aa
White text reads best on this color (8.94:1).
About this color
#2C40A0 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.157 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.030 away. White text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #2C40A0 |
| RGB | rgb(44, 64, 160) |
| HSL | hsl(230, 57%, 40%) |
| OKLCH | oklch(41.7% 0.157 269.4) |
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 #2C40A0 | 8.94:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #2C40A0 | 2.34:1 | Fails | Lc 14.0 | Not readable |
| #2C40A0 text on white | 8.94:1 | AAA | Lc 90.0 | Preferred for body text |
| #2C40A0 text on black | 2.34:1 | Fails | Lc -12.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CBD8FC
oklch(88.4% 0.052 269.6)
-
Step 300
300
#A9BEFD
oklch(80.8% 0.092 270)
-
Step 400
400
#7C9AFC
oklch(70.7% 0.147 269.5)
-
Step 500
500
#5D7EF9
oklch(63.2% 0.187 269.2)
-
Step 600
600
#4663E8
oklch(55.6% 0.203 269.3)
-
Step 700
700
#3851CA
oklch(49.1% 0.189 269.2)
-
Step 800
800 (this color)
#2C40A0
oklch(41.7% 0.157 269.4)
-
Step 900
900
#283A81
oklch(37.7% 0.122 269.1)
-
Step 950
950
#18234C
oklch(27.1% 0.077 269.4)
#2C40A0 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) | #004FA3 | 0.042 |
| Deuteranopia (no green cones) | #00449E | 0.030 |
| Tritanopia (no blue cones) | #005869 | 0.126 |
| Achromatopsia (no color) | #494949 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C40A0
#2C40A0
oklch(41.7% 0.157 269.4)
- #5F4900
#5F4900
oklch(41.7% 0.085 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 #2C40A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.030
- Cobalt #1E488F ΔE 0.038
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.052
- Dusk Blue #26538D ΔE 0.063
- Blue Blue #2242C7 ΔE 0.063
- Light Navy #155084 ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.071
Use #2C40A0 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.