#1355A8
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.148 257), rgb(19, 85, 168).
Aa
White text reads best on this color (7.26:1).
About this color
#1355A8 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.148 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.044 away. White text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #1355A8 |
| RGB | rgb(19, 85, 168) |
| HSL | hsl(213, 80%, 37%) |
| OKLCH | oklch(45.9% 0.148 257) |
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 #1355A8 | 7.26:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #1355A8 | 2.89:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #1355A8 text on white | 7.26:1 | AAA | Lc 84.6 | Fine for body text |
| #1355A8 text on black | 2.89:1 | Fails | Lc -17.4 | 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 700.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A3C3EF
oklch(80.9% 0.072 256.4)
-
Step 400
400
#71A2E7
oklch(70.6% 0.115 257)
-
Step 500
500
#4B89E0
oklch(63% 0.147 257.2)
-
Step 600
600
#2C71CE
oklch(55.5% 0.16 257.1)
-
Step 700
700 (this color)
#1355A8
oklch(45.9% 0.148 257)
-
Step 800
800
#1B4E90
oklch(42.8% 0.122 256.5)
-
Step 900
900
#1D4173
oklch(37.7% 0.095 257.2)
-
Step 950
950
#122643
oklch(26.9% 0.06 257.7)
#1355A8 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) | #225EAB | 0.028 |
| Deuteranopia (no green cones) | #0051A6 | 0.014 |
| Tritanopia (no blue cones) | #006976 | 0.112 |
| Achromatopsia (no color) | #575757 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1355A8
#1355A8
oklch(45.9% 0.148 257)
- #754F00
#754F00
oklch(45.8% 0.096 76.9)
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 #1355A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.044
- Cobalt #1E488F ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.059
- Light Navy #155084 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.064
- Peacock Blue #016795 ΔE 0.065
Use #1355A8 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.