#223ABA
Closest named color: Sapphire (#2138AB). oklch(42.6% 0.201 267.6), rgb(34, 58, 186).
Aa
White text reads best on this color (8.81:1).
About this color
#223ABA is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.201 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.025 away. White text reads best on it, at 8.81:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #223ABA |
| RGB | rgb(34, 58, 186) |
| HSL | hsl(231, 69%, 43%) |
| OKLCH | oklch(42.6% 0.201 267.6) |
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 #223ABA | 8.81:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #223ABA | 2.38:1 | Fails | Lc 14.7 | Not readable |
| #223ABA text on white | 8.81:1 | AAA | Lc 89.3 | Fine for body text |
| #223ABA text on black | 2.38:1 | Fails | Lc -13.0 | 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 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
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#385BFF
oklch(55.5% 0.245 267.7)
-
Step 700
700
#2A45E7
oklch(49.2% 0.242 267.6)
-
Step 800
800 (this color)
#223ABA
oklch(42.6% 0.201 267.6)
-
Step 900
900
#1F3593
oklch(37.7% 0.156 267.7)
-
Step 950
950
#122056
oklch(27% 0.1 268)
#223ABA 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) | #0052BE | 0.054 |
| Deuteranopia (no green cones) | #0043B8 | 0.023 |
| Tritanopia (no blue cones) | #005D75 | 0.154 |
| Achromatopsia (no color) | #4A4A4A | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223ABA
#223ABA
oklch(42.6% 0.201 267.6)
- #634B00
#634B00
oklch(42.6% 0.087 87.5)
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 #223ABA, closest first.
No curated palette has a color within ΔE 0.04 of #223ABA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.025
- Blue Blue #2242C7 ΔE 0.028
- Majorelle Blue #3F37C9 ΔE 0.042
- Indigo Blue #3A18B1 ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- True Blue #010FCC ΔE 0.071
- Ultramarine Blue #1805DB ΔE 0.075
- Blurple #5539CC ΔE 0.075
Use #223ABA 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.