#1283A8
Closest named color: Blue NCS (#118AB2). oklch(57% 0.106 227.4), rgb(18, 131, 168).
Aa
Black text reads best on this color (4.83:1).
About this color
#1283A8 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.106 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.023 away. Black text reads best on it, at 4.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #1283A8 |
| RGB | rgb(18, 131, 168) |
| HSL | hsl(195, 81%, 36%) |
| OKLCH | oklch(57% 0.106 227.4) |
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 #1283A8 | 4.34:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #1283A8 | 4.83:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #1283A8 text on white | 4.34:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #1283A8 text on black | 4.83:1 | AA | Lc -32.1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C7D9
oklch(80.8% 0.048 228.3)
-
Step 400
400
#6BABC6
oklch(70.8% 0.076 226.8)
-
Step 500
500
#3C95B8
oklch(63.1% 0.099 227.6)
-
Step 600
600 (this color)
#1283A8
oklch(57% 0.106 227.4)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#025772
oklch(42.7% 0.082 227.8)
-
Step 900
900
#12485C
oklch(37.7% 0.064 227.4)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#1283A8 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) | #6F81AA | 0.077 |
| Deuteranopia (no green cones) | #5D73A8 | 0.068 |
| Tritanopia (no blue cones) | #008E8F | 0.059 |
| Achromatopsia (no color) | #797979 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1283A8
#1283A8
oklch(57% 0.106 227.4)
- #AA623D
#AA623D
oklch(57% 0.107 47)
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 #1283A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.023
- Teal Blue #01889F ΔE 0.024
- Nice Blue #107AB0 ΔE 0.032
- Cerulean #457B9D ΔE 0.035
- Steel Blue #4682B4 ΔE 0.038
- Ocean #017B92 ΔE 0.039
- Stormy Blue #507B9C ΔE 0.043
- Cool Blue #4984B8 ΔE 0.044
Use #1283A8 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.