#1370AB
Closest named color: Mid Blue (#276AB3). oklch(52.5% 0.122 243.9), rgb(19, 112, 171).
Aa
White text reads best on this color (5.33:1).
About this color
#1370AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.122 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.024 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #1370AB |
| RGB | rgb(19, 112, 171) |
| HSL | hsl(203, 80%, 37%) |
| OKLCH | oklch(52.5% 0.122 243.9) |
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 #1370AB | 5.33:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #1370AB | 3.93:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #1370AB text on white | 5.33:1 | AA | Lc 76.1 | Fine for body text |
| #1370AB text on black | 3.93:1 | AA large text | Lc -25.7 | Dividers and decoration only |
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
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A3C5E2
oklch(80.8% 0.055 244.3)
-
Step 400
400
#70A7D4
oklch(70.8% 0.088 244.2)
-
Step 500
500
#4690C8
oklch(63.1% 0.112 243.9)
-
Step 600
600 (this color)
#1370AB
oklch(52.5% 0.122 243.9)
-
Step 700
700
#12669C
oklch(49.1% 0.114 243.9)
-
Step 800
800
#14537E
oklch(42.6% 0.094 244)
-
Step 900
900
#194565
oklch(37.6% 0.073 243.7)
-
Step 950
950
#10293B
oklch(27.1% 0.046 242.4)
#1370AB 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) | #5472AE | 0.053 |
| Deuteranopia (no green cones) | #3F65AA | 0.039 |
| Tritanopia (no blue cones) | #007E85 | 0.083 |
| Achromatopsia (no color) | #6B6B6B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1370AB
#1370AB
oklch(52.5% 0.122 243.9)
- #995900
#995900
oklch(52.6% 0.119 64)
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 #1370AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.024
- Ocean Blue #03719C ΔE 0.026
- Nice Blue #107AB0 ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.029
- Muted Blue #3B719F ΔE 0.031
- French Blue #436BAD ΔE 0.034
- Sea Blue #047495 ΔE 0.041
- Peacock Blue #016795 ΔE 0.042
Use #1370AB 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.