#1E7BB4
Closest named color: Nice Blue (#107AB0). oklch(55.9% 0.121 241.8), rgb(30, 123, 180).
Aa
White text reads best on this color (4.61:1).
About this color
#1E7BB4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.121 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.009 away. White text reads best on it, at 4.61:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.54:1 |
| White text | 4.61:1 |
Values
| HEX | #1E7BB4 |
| RGB | rgb(30, 123, 180) |
| HSL | hsl(203, 71%, 41%) |
| OKLCH | oklch(55.9% 0.121 241.8) |
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 #1E7BB4 | 4.61:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #1E7BB4 | 4.54:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #1E7BB4 text on white | 4.61:1 | AA | Lc 71.6 | Content text, not long reading |
| #1E7BB4 text on black | 4.54:1 | AA | Lc -30.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCEC
oklch(88.4% 0.031 242)
-
Step 300
300
#A2C6E1
oklch(80.9% 0.054 240.8)
-
Step 400
400
#6EA8D2
oklch(70.8% 0.086 241)
-
Step 500
500
#4491C6
oklch(63.1% 0.11 241.6)
-
Step 600
600 (this color)
#1E7BB4
oklch(55.9% 0.121 241.8)
-
Step 700
700
#0B679A
oklch(49.2% 0.112 241.4)
-
Step 800
800
#10547D
oklch(42.7% 0.093 241.6)
-
Step 900
900
#174664
oklch(37.8% 0.072 240.7)
-
Step 950
950
#0F293B
oklch(27% 0.046 241.6)
#1E7BB4 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) | #607CB6 | 0.057 |
| Deuteranopia (no green cones) | #4B6FB3 | 0.044 |
| Tritanopia (no blue cones) | #00898F | 0.082 |
| Achromatopsia (no color) | #757575 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E7BB4
#1E7BB4
oklch(55.9% 0.121 241.8)
- #A56116
#A56116
oklch(55.8% 0.12 61.7)
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 #1E7BB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.009
- Windows Blue #3778BF ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.029
- Steel Blue #4682B4 ΔE 0.037
- Muted Blue #3B719F ΔE 0.039
- Cerulean #457B9D ΔE 0.043
- Cool Blue #4984B8 ΔE 0.043
- Blue NCS #118AB2 ΔE 0.045
Use #1E7BB4 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.