#2383C2
Closest named color: Water Blue (#0E87CC). oklch(58.7% 0.129 243.2), rgb(35, 131, 194).
Aa
Black text reads best on this color (5.09:1).
About this color
#2383C2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.129 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.017 away. Black text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #2383C2 |
| RGB | rgb(35, 131, 194) |
| HSL | hsl(204, 69%, 45%) |
| OKLCH | oklch(58.7% 0.129 243.2) |
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 #2383C2 | 4.12:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #2383C2 | 5.09:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #2383C2 text on white | 4.12:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #2383C2 text on black | 5.09:1 | AA | Lc -33.8 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A1C6E4
oklch(81% 0.058 243)
-
Step 400
400
#6CA7D6
oklch(70.6% 0.093 243.7)
-
Step 500
500
#3F91CB
oklch(63.2% 0.118 242.7)
-
Step 600
600 (this color)
#2383C2
oklch(58.7% 0.129 243.2)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#0A5480
oklch(42.8% 0.098 242.6)
-
Step 900
900
#154567
oklch(37.6% 0.077 243.7)
-
Step 950
950
#0E293C
oklch(27% 0.048 242.2)
#2383C2 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) | #6585C5 | 0.058 |
| Deuteranopia (no green cones) | #4F77C1 | 0.043 |
| Tritanopia (no blue cones) | #00929A | 0.087 |
| Achromatopsia (no color) | #7D7D7D | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2383C2
#2383C2
oklch(58.7% 0.129 243.2)
- #B06810
#B06810
oklch(58.5% 0.128 63.1)
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 #2383C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.017
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Windows Blue #3778BF ΔE 0.030
- Blue NCS #118AB2 ΔE 0.036
- Nice Blue #107AB0 ΔE 0.037
- Off Blue #5684AE ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.053
Use #2383C2 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.