#319FD4
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.5% 0.124 234.5), rgb(49, 159, 212).
Aa
Black text reads best on this color (7.04:1).
About this color
#319FD4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.124 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.056 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #319FD4 |
| RGB | rgb(49, 159, 212) |
| HSL | hsl(200, 65%, 51%) |
| OKLCH | oklch(66.5% 0.124 234.5) |
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 #319FD4 | 2.98:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #319FD4 | 7.04:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #319FD4 text on white | 2.98:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #319FD4 text on black | 7.04:1 | AAA | Lc -45.7 | Large or bold text, headings |
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
#DFECF4
oklch(93.6% 0.018 234.5)
-
Step 200
200
#C5DDEC
oklch(88.4% 0.033 235.2)
-
Step 300
300
#9BC8E2
oklch(81% 0.06 233.8)
-
Step 400
400
#5FAAD4
oklch(70.6% 0.097 234.9)
-
Step 500
500 (this color)
#319FD4
oklch(66.5% 0.124 234.5)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004765
oklch(37.6% 0.08 234.9)
-
Step 950
950
#062A3C
oklch(27% 0.052 235.4)
#319FD4 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) | #859ED6 | 0.076 |
| Deuteranopia (no green cones) | #6F8FD3 | 0.063 |
| Tritanopia (no blue cones) | #00ADB1 | 0.077 |
| Achromatopsia (no color) | #959595 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #319FD4
#319FD4
oklch(66.5% 0.124 234.5)
- #CD7D43
#CD7D43
oklch(66.4% 0.124 54.6)
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 #319FD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.058
- Faded Blue #658CBB ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.065
- Water Blue #0E87CC ΔE 0.071
- Greyblue #77A1B5 ΔE 0.073
- Blue NCS #118AB2 ΔE 0.075
Use #319FD4 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.