#1593CC
Closest named color: Water Blue (#0E87CC). oklch(62.8% 0.13 236), rgb(21, 147, 204).
Aa
Black text reads best on this color (6.07:1).
About this color
#1593CC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.130 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.035 away. Black text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #1593CC |
| RGB | rgb(21, 147, 204) |
| HSL | hsl(199, 81%, 44%) |
| OKLCH | oklch(62.8% 0.13 236) |
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 #1593CC | 3.45:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #1593CC | 6.07:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #1593CC text on white | 3.45:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #1593CC text on black | 6.07:1 | AA | Lc -40.1 | 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 500.
-
Step 50
50
#F0F6FA
oklch(97% 0.008 236.6)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEE
oklch(88.4% 0.036 237.6)
-
Step 300
300
#99C8E5
oklch(81% 0.064 235.7)
-
Step 400
400
#5CAAD8
oklch(70.7% 0.102 236.6)
-
Step 500
500 (this color)
#1593CC
oklch(62.8% 0.13 236)
-
Step 600
600
#007CAF
oklch(55.5% 0.12 236.1)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#042A3D
oklch(27% 0.054 235.8)
#1593CC 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) | #7793CF | 0.076 |
| Deuteranopia (no green cones) | #6083CB | 0.062 |
| Tritanopia (no blue cones) | #00A2A7 | 0.081 |
| Achromatopsia (no color) | #8A8A8A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1593CC
#1593CC
oklch(62.8% 0.13 236)
- #C3712E
#C3712E
oklch(62.8% 0.13 56.1)
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 #1593CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.035
- Blue NCS #118AB2 ΔE 0.043
- Cool Blue #4984B8 ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.049
- Steel Blue #4682B4 ΔE 0.054
- Faded Blue #658CBB ΔE 0.057
- Off Blue #5684AE ΔE 0.061
- Dusty Blue #5A86AD ΔE 0.061
Use #1593CC 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.