#223791
Closest named color: Sapphire (#2138AB). oklch(38.1% 0.15 268.2), rgb(34, 55, 145).
Aa
White text reads best on this color (10.37:1).
About this color
#223791 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.150 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.043 away. White text reads best on it, at 10.37:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.02:1 |
| White text | 10.37:1 |
Values
| HEX | #223791 |
| RGB | rgb(34, 55, 145) |
| HSL | hsl(229, 62%, 35%) |
| OKLCH | oklch(38.1% 0.15 268.2) |
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 #223791 | 10.37:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #223791 | 2.02:1 | Fails | Lc 10.4 | Not readable |
| #223791 text on white | 10.37:1 | AAA | Lc 93.5 | Preferred for body text |
| #223791 text on black | 2.02:1 | Fails | Lc -9.0 | 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 900.
-
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
#577DFF
oklch(63.1% 0.197 268)
-
Step 600
600
#3B5BFF
oklch(55.6% 0.244 268.3)
-
Step 700
700
#2E47E2
oklch(49.1% 0.233 268.3)
-
Step 800
800
#253CB6
oklch(42.7% 0.193 268.1)
-
Step 900
900 (this color)
#223791
oklch(38.1% 0.15 268.2)
-
Step 950
950
#132154
oklch(27.1% 0.095 267.9)
#223791 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) | #004594 | 0.037 |
| Deuteranopia (no green cones) | #003B8F | 0.023 |
| Tritanopia (no blue cones) | #004E5E | 0.119 |
| Achromatopsia (no color) | #404040 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223791
#223791
oklch(38.1% 0.15 268.2)
- #544000
#544000
oklch(38.2% 0.078 88.5)
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 #223791, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.043
- Cobalt #1E488F ΔE 0.045
- Twilight Blue #0A437A ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.060
- Royal #0C1793 ΔE 0.072
- Marine Blue #01386A ΔE 0.073
- Light Navy #155084 ΔE 0.074
Use #223791 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.