#2A83AE
Closest named color: Blue NCS (#118AB2). oklch(57.8% 0.105 234.2), rgb(42, 131, 174).
Aa
Black text reads best on this color (4.95:1).
About this color
#2A83AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.105 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.020 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #2A83AE |
| RGB | rgb(42, 131, 174) |
| HSL | hsl(200, 61%, 42%) |
| OKLCH | oklch(57.8% 0.105 234.2) |
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 #2A83AE | 4.23:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #2A83AE | 4.95:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #2A83AE text on white | 4.23:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #2A83AE text on black | 4.95:1 | AA | Lc -32.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DB
oklch(80.9% 0.047 235.3)
-
Step 400
400
#70A9C9
oklch(70.7% 0.076 233.9)
-
Step 500
500
#4693BB
oklch(63.1% 0.097 233.9)
-
Step 600
600 (this color)
#2A83AE
oklch(57.8% 0.105 234.2)
-
Step 700
700
#11698F
oklch(49.1% 0.097 233.7)
-
Step 800
800
#145674
oklch(42.8% 0.08 233.4)
-
Step 900
900
#19475E
oklch(37.8% 0.063 233.8)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#2A83AE 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) | #6E82B0 | 0.065 |
| Deuteranopia (no green cones) | #5C75AD | 0.055 |
| Tritanopia (no blue cones) | #008E92 | 0.064 |
| Achromatopsia (no color) | #7B7B7B | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A83AE
#2A83AE
oklch(57.8% 0.105 234.2)
- #A96739
#A96739
oklch(57.7% 0.105 53.9)
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 #2A83AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.020
- Steel Blue #4682B4 ΔE 0.024
- Cool Blue #4984B8 ΔE 0.030
- Nice Blue #107AB0 ΔE 0.031
- Cerulean #457B9D ΔE 0.033
- Teal Blue #01889F ΔE 0.034
- Off Blue #5684AE ΔE 0.037
- Stormy Blue #507B9C ΔE 0.039
Use #2A83AE 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.