#3042B1
Closest named color: Sapphire (#2138AB). oklch(43.8% 0.176 270.2), rgb(48, 66, 177).
Aa
White text reads best on this color (8.26:1).
About this color
#3042B1 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.176 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.033 away. White text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.53:1 |
| White text | 8.26:1 |
Values
| HEX | #3042B1 |
| RGB | rgb(48, 66, 177) |
| HSL | hsl(232, 57%, 44%) |
| OKLCH | oklch(43.8% 0.176 270.2) |
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 #3042B1 | 8.26:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #3042B1 | 2.53:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #3042B1 text on white | 8.26:1 | AAA | Lc 88.0 | Fine for body text |
| #3042B1 text on black | 2.53:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500
#5D7BFF
oklch(63% 0.198 270.2)
-
Step 600
600
#455DF6
oklch(55.6% 0.228 270.2)
-
Step 700
700
#384BD7
oklch(49.2% 0.213 270.2)
-
Step 800
800 (this color)
#3042B1
oklch(43.8% 0.176 270.2)
-
Step 900
900
#273789
oklch(37.6% 0.138 270.1)
-
Step 950
950
#172150
oklch(26.9% 0.087 270.5)
#3042B1 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) | #0055B5 | 0.049 |
| Deuteranopia (no green cones) | #0049AF | 0.032 |
| Tritanopia (no blue cones) | #005F73 | 0.141 |
| Achromatopsia (no color) | #4E4E4E | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3042B1
#3042B1
oklch(43.8% 0.176 270.2)
- #654F00
#654F00
oklch(43.8% 0.09 90.2)
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 #3042B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.033
- Blue Blue #2242C7 ΔE 0.037
- Majorelle Blue #3F37C9 ΔE 0.046
- Blueberry #464196 ΔE 0.053
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Cobalt #1E488F ΔE 0.061
- Blurple #5539CC ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.070
Use #3042B1 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.