#1283A4
Closest named color: Teal Blue (#01889F). oklch(56.8% 0.103 224.5), rgb(18, 131, 164).
Aa
Black text reads best on this color (4.80:1).
About this color
#1283A4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.103 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.019 away. Black text reads best on it, at 4.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #1283A4 |
| RGB | rgb(18, 131, 164) |
| HSL | hsl(194, 80%, 36%) |
| OKLCH | oklch(56.8% 0.103 224.5) |
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 #1283A4 | 4.36:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #1283A4 | 4.80:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #1283A4 text on white | 4.36:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #1283A4 text on black | 4.80:1 | AA | Lc -31.9 | 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
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A1C8D7
oklch(81% 0.046 223.3)
-
Step 400
400
#6BABC3
oklch(70.7% 0.074 223.9)
-
Step 500
500
#3D95B4
oklch(63% 0.095 224.7)
-
Step 600
600 (this color)
#1283A4
oklch(56.8% 0.103 224.5)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#03586F
oklch(42.8% 0.079 223.7)
-
Step 900
900
#13485A
oklch(37.6% 0.062 225)
-
Step 950
950
#0D2A35
oklch(26.9% 0.04 226.2)
#1283A4 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) | #7180A6 | 0.080 |
| Deuteranopia (no green cones) | #5E73A4 | 0.069 |
| Tritanopia (no blue cones) | #008D8E | 0.053 |
| Achromatopsia (no color) | #797979 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1283A4
#1283A4
oklch(56.8% 0.103 224.5)
- #A96141
#A96141
oklch(56.8% 0.104 44.1)
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 #1283A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.019
- Blue NCS #118AB2 ΔE 0.026
- Cerulean #457B9D ΔE 0.034
- Ocean #017B92 ΔE 0.034
- Nice Blue #107AB0 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.042
- Stormy Blue #507B9C ΔE 0.043
- Sea Blue #047495 ΔE 0.047
Use #1283A4 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.